Add .ruby-version so works with rvm and rbenv
Merge pull request #75 from tombell/ruby-version

Add .ruby-version so works with rvm and rbenv
Update Rails to v3.2.11
Merge pull request #78 from ezkl/rails-v3-2-11

Update Rails to v3.2.11 [#74]
Rename Sign Out to Lock
Update signout feature to lock feature
Merge pull request #77 from tombell/lock-vs-sign-out

Rename Sign Out to Lock