Fix some docs issues #577

	name: CI Build
	on:
	push:
	branches:
	- main
	pull_request:
	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	rust: [stable, beta, nightly]
	steps:
	- name: Install native dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install libsdl2-dev libasound2-dev
	- uses: hecrj/setup-rust-action@v1
	with:
	rust-version: ${{ matrix.rust }}
	- uses: actions/checkout@v1
	- name: Build and test (all features, all targets)
	run: cargo test
	- name: Build and test (no features, library only)
	run: cargo test --lib --no-default-features

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