Merge branch 'release/0.3.1' into develop

* release/0.3.1:
  Update change log
Update rails to 3.2.11
Remove heroku gem, prefer Heroku toolbelt instead
Update brakeman
Update rails_best_practices
Update changelog
Merge branch 'release/0.3.2'

* release/0.3.2:
  Update changelog
  Update rails_best_practices
  Update brakeman
  Remove heroku gem, prefer Heroku toolbelt instead
  Update rails to 3.2.11