Added readme for rfb project

[jarumihooi]

fixes #65

[jarumihooi]

Requesting review of this readme for developing maturity of the project's documentation. Readme should be in a readable state containing up to present information.

[keighrim]

Let's wait for

• "raw" annotation files are ready to go public
• resolution on handling dually annotated data #71
• decision on where to put IAA code
• (possibly) revision of the readme for additional SWT types

If you want to switch the target branch to a somewhat intermediate "develop" branch for RFB in general, feel free to do so. I just don't think the readme file only isn't enough to go into the main branch.

[keighrim]

From yesterday's meeting, here's some (interim) decisions:

• "raw" annotation files are ready to go public

R2 annotation files are ready.

• resolution on handling dually annotated data #71

(interim) For R2 annotation, after eyeballing on the initial IAA results, we decided to use Gabe's as base and do "union" of two annotation sets to create the first public version gold.

• decision on where to put IAA code

The code is being pushed to https://github.com/clamsproject/aapb-annenv-role-filler-binder/tree/iaa_calculation branch.

• (possibly) revision of the readme for additional SWT types

We decided a while ago to completely disregard SWT-like subtask from the RFB annotation, so this point shouldn't be relevant any more.

[keighrim]

Please

1. add "gold" (by simple merge) (Manual or by writing code? Pick whichever you think the quicker)
2. update readme with documenting (process.py section) of the adjudication steps
3. update the guideline link to the newly formatted document

[jarumihooi]

During another conversation, I believe for these two reasons, we decided to hold off on a publicized golds:

1. We decided to use Gabe's raws as uploaded raws for now.
2. Other tools may have requests for certain formatting of the golds, therefore more might be required during processing.

Let's scope this issue as starting a readme, documenting the batches, and uploading one of the raws. A new issue can be created for formalizing the golds format and process.py