Release version 0.2.1

This version fixes issues with installing and readthedocs-builds.
Bump version to 0.2.2
setup.py: add missing comma
setup.py change homepage to lima.readthedocs.org
Docs: Add smaller version of illustration.
Docs: Fix illustration alt text.
Update CHANGELOG
Merge branch 'hotfix/0.2.2' into develop

Conflicts:
	CHANGELOG.rst
	lima/__init__.py