Adding CONTRIBUTING.md as a starting point for discussing processes

This PR is my attempt at resolving solid#69

The resource is inspired by https://github.com/w3c-cg/solid/blob/main/CONTRIBUTING.md and https://www.w3.org/Consortium/Process/#decisions.

Moved some stuff from README.md to CONTRIBUTING.md.

CONTRIBUTING.md

@@ -0,0 +1,161 @@
+# Solid Team Contributing Guide
+
+[The Solid Team](team.md) is headed by Sir Tim Berners-Lee and provides an organisational umbrella for facilitating a
+strong open source community in support of Solid. This repository contains work of the Solid Team to meet the needs of
+the [Solid Project](https://solidproject.org/).
+
+The Solid Team is a group of volunteers tasked with representing the Solid Project in an official capacity. It engages
+in activities that foster the spread and adoption of the Solid protocol.
+
+## Code of Conduct
+
+The Solid Team follows
+the [Solid Community Code of Conduct](https://github.com/solid/process/blob/main/code-of-conduct.md).
+
+## How to join the team
+
+Anyone can become a member of the Solid Team. Check out the [team.md](team.md) for more information about how to join
+the team.
+
+## How the team works
+
+Solid Team consists of volunteers, lead by Sir Tim Berners-Lee. The group operates mostly as
+a [do-ocracy](https://communitywiki.org/wiki/DoOcracy), where tasks are assigned by members taking on responsibility
+themselves. Members are required to adhere to [teams' decisions](#decisions).
+
+### Tasks
+
+The Solid Team engages in a number of [tasks](tasks). Tasks may be added or removed from the team's scope by majority
+vote at a Solid Team meeting. ### Task Force Membership Team members may be added or removed from this task force by a
+majority vote at a Solid Team meeting. There must be a lead for this task. While other members may assist in the task,
+it is the responsibility of the leader to follow up on the task and report updates to the team.
+
+### Meetings
+
+The Solid Team holds meetings at <https://meet.jit.si/solid-team> on every second Wednesday of the month at 15:00 UTC -
+subscribe to [vCalendar](https://raw.githubusercontent.com/solid/team/main/meetings/calendar.ics). Meetings are
+transcribed and [published](meetings). Additional team meetings may be created, in which case Solid Team members will be
+notified via calendar invitation and in the Solid Team chat.
+
+### Issues
+
+[Issues](https://docs.github.com/en/github/managing-your-work-on-github/about-issues)
+are used to track tasks that contributors can help with. Issues are mostly grouped
+into [task forces](README.md#ongoing-task-forces), so you should join one of them if you want to collaborate with
+others.
+
+### Pull requests
+
+A [pull
+request](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/about-pull-requests)
+is a way to suggest changes in our repository.
+
+### Decisions
+
+The team's decision process is inspired by
+the [chapter on decisions in W3C Process Document](https://www.w3.org/Consortium/Process/#decisions).
+
+The team attempts to resolve issues through dialog. Individuals who disagree strongly with a decision should register
+with the leader any formal objections.
+
+Any substantive issues that can't be resolved through reaching consensus through technical discussions and compromise
+must go through a vote, and the results must be public. Decisions may be made during [meetings](./meetings)
+(face-to-face or distributed) as well as through persistent text-based discussions.
+
+Each member has one vote. The leader has a double vote if there's a tie. A decision requires the majority (i.e. at least
+50%) of the votes amongst the attendees, and at least 50% of all members must attend a decision for it to be valid. (
+E.g. if there are 12 members overall, at least 6 must attend a meeting for it to be possible to make decisions in that
+meeting. Of these, at least 4 of the votes are required for a decision.)
+
+The leader can require decisions to need a supermajority, which means that a minimum of 50% of eligible voters must vote
+for a decision to be made. (E.g. if there are 12 members overall, at least 6 of their votes are required for a decision
+to be made.)
+
+Individuals might abstain. Abstention is either an explicit expression of no opinion or silence by an individual in the
+set.
+
+### Communication
+
+The opinions of team members may carry particular weight, whether they are expressed within our community or elsewhere.
+As a team member:
+
+* It is assumed you are speaking as an individual unless you state otherwise.
+* If you want to express the opinion of your organisation or a group you are affiliated with, make it clear before you
+  state their view.
+* Do not use phrases like "on behalf of the team" or "the team thinks that" unless the group has asked you to do so.
+* When communicating team decisions, provide references to what was decided and what was not decided.
+
+### Transparency
+
+Team members represent the overall Solid efforts, and so should strive to make their efforts transparent. This is mostly
+done by communicating substantial efforts and changes through [issues](#issues) and [pull requests](#pull-requests). In
+cases where full transparency is counterproductive (e.g. ongoing efforts include tools where public access is not
+possible or costly), efforts should be made to mitigate these constraints as efficient as possible.
+
+## Make changes
+
+### Make changes locally
+
+1. Install Git
+2. Fork the repository.
+3. Create a working branch and start with your changes!
+
+## Commit your update
+
+Commit the changes once you are happy with them. See [Atom's contributing
+guide](https://github.com/atom/atom/blob/master/CONTRIBUTING.md#git-commit-messages)
+to know how to use emoji for commit messages.
+
+Once your changes are ready, don't forget to [self-review](#self-review) to
+speed up the review process:zap:.
+
+### Self-review
+
+You are strongly encouraged to review your own PR first.
+
+* [ ] Compare your PR's source changes to staging to confirm that the
+  output matches the source and that everything is rendering as expected. The
+  W3C service to [creating diff between HTML pages](https://services.w3.org/htmldiff)
+  can also be used.
+* [ ] Review the content for technical accuracy.
+* [ ] Review the content to use [inclusive
+  language](https://github.com/github/docs/blob/main/contributing/content-style-guide.md#inclusive-language).
+  Celebrate people/names from under represented ethnic/cultural backgrounds in
+  examples, e.g., [unique forenames in
+  Earth](https://forebears.io/earth/forenames), [example person
+  names](https://developers.google.com/style/examples#example-person-names).
+
+## Creating a pull request
+
+When you're finished with the changes to documents that are maintained in this
+repository, create a PR.
+
+* Include atomic commits, small PRs: "one concern, one PR".
+* In the PR comment, provide as much context and evidence to help reviewers
+  evaluate the PR. Identify, classify, describes the changes as per W3C
+  Process [Correction
+  Classes](https://www.w3.org/Consortium/Process/#correction-classes).
+* Don't forget to [link PR to
+  issue](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue)
+  if you are solving one.
+* We can ask for changes to be made before a PR can be merged, either using
+  [suggested
+  changes](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/incorporating-feedback-in-your-pull-request)
+  or PR comments. You can apply suggested changes directly through the UI. You
+  can make any other changes in your fork, then commit them to your branch.
+* As you update your PR and apply changes, mark each conversation as
+  [resolved](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/commenting-on-a-pull-request#resolving-conversations).
+* If you run into any merge issues, checkout this [git
+  tutorial](https://lab.github.com/githubtraining/managing-merge-conflicts) to
+  help you resolve merge conflicts and other issues.
+* You can attribute a commit to more than one author by adding one or more
+  `Co-authored-by: NAME <NAME@EXAMPLE.COM>` per line to commit's message
+  (after two empty lines). See [github
+  tutorial](https://docs.github.com/en/pull-requests/committing-changes-to-your-project/creating-and-editing-commits/creating-a-commit-with-multiple-authors).
+* To help maintain a clean Git history, consider using [squash
+  merge](https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/configuring-pull-request-merges/about-merge-methods-on-github#squashing-your-merge-commits)
+  for PRs, especially when incorporating reviews and code additions.
+
+### Your PR is merged!
+
+Congratulations :tada: The Solid Team and the community thanks you :sparkles: 

README.md

@@ -12,6 +12,8 @@ The Solid Team has a (member-only) [chat](https://gitter.im/solid/team).
 
 The Solid Team holds meetings at <https://meet.jit.si/solid-team> on every second Wednesday of the month at 15:00 UTC - subscribe to [vCalendar](https://raw.githubusercontent.com/solid/team/main/meetings/calendar.ics). Meetings are transcribed and [published](https://github.com/solid/team/tree/main/meetings/). Additional team meetings may be created, in which case Solid Team members will be notified via calendar invitation and in the Solid Team chat.
 
+To know more about how to contribute, check [CONTRIBUTING.md](https://github.com/solid/team/tree/main/CONTRIBUTING.md).
+
 ## Membership
 
 [Membership Information](/team.md)
@@ -22,11 +24,7 @@ The Solid Team follows the [Solid Community Code of Conduct](https://github.com/
 
 ## Tasks
 
-The Solid Team engages in a number of tasks. Tasks may be added or removed from the team's scope by majority vote at a Solid Team meeting. A blocked task is a tast that the team wants to do, but currently doesn't have the resources to do.
-
-### Task Force Membership
-
-Team members may be added or removed from this task force by a majority vote at a Solid Team meeting. There must be a lead for this task. While other members may assist in the task, it is the responsibility of the leader to
+The Solid Team engages in a number of tasks. A blocked task is a task that the team wants to do, but currently doesn't have the resources to do.
 
 ### Ongoing Task Forces