Update Rails to 3.2.11 due to security bug

See
https://groups.google.com/forum/#!topic/rubyonrails-security/61bkgvnSGTQ/discussion

I have also switched the git repository references to use https:// and
git://, the latter was not working with Github for my client.
Merge pull request #24 from kyledrake/master

Update Rails to 3.2.11 due to security bug