Use consistent header style in tutorial part 5
Version 2.2.6
Fix 1.3 compat issue.  Closes #780
Remove redundant text.
Merge pull request #783 from vshih/master

Remove redundant text.
Allow overriding get_object to work correctly. Fixes #784
Merge branch 'master' of https://github.com/tomchristie/django-rest-framework
Add DecimalField support
Fix unicodes
Update release notes