[JRO] Update rails to 3.2.12
[JRO] Integration test coverage for Oauth login
Added additional code formatting for install guide
[#107] Link external identity with internal acct

As a user with an existing account, I log in with an external
authentication/identity that has an email address different from my
existing account's. I should be able to link my external identity with
my existing account.
[#107] html_safe'ing a flash message
[#107] Sign in as previous account user

Oops? Very important detail
[#107] Logging out and in again - user should be right

Edge cases. Love 'em.
[JRO] Update README and INSTALL
[JRO] Add vagrant-setup script