Django Rest -> MkDocs

Oops.
Updated docs for multiple theme directories

Originally changed in 8f3c2b0.
Remove Lorem ipsum
Add BSD license file
Add a note about supported Python versions
Fix RTD theme toc when pages don't have children.
Link to RTD footer
Merge pull request #157 from d0ugal/LICENSE

Add BSD license file
Merge pull request #160 from ericholscher/fix-rtd-unnested

Fix RTD theme toc when pages don't have children.
Merge pull request #158 from d0ugal/documentation-updates

Documentation updates
Update index.md

Closes #161
Merge remote-tracking branch 'upstream/master'

Sync with upstream