Update LICENSE.
Add starter documentation folder.
Add docs build to gitignore.
Change docs theme.
Move README content into the index and rstify.
Go back to default theme for RTD.
Document the extensions.
Clarify guidelines for GeoAdmin.
Mention that `Article` is a `Base` subclass.

Intersphinx not playing on this one, no idea why...
Add documentation of settings.
Document bundled content types.
Document the template tag. Yuk.
Mention you don't have to use AppContent.
Remove some refs as they render weird.
Add docs link to README.
Update README.markdown
Add add_extension_options to ArticleAdmin
Bumped version to v0.2.1
Added missing fieldset_insertion_index
Merge branch 'master' of https://github.com/incuna/feincms-articles