write failing tests for users signup feature
tweak failing tests for user signup
add failing feature tests for user sessions
Merge branch 'user-feature-tests' into user-spec
add a few more failing tests to users and sessions controller
fix bug with current_user method, add a login form, add ability to logout
fix users, so that all the tests pass
fix merge conflicts
fix small error in the show question view
Merge pull request #8 from purple-martins-2013/implement-users

Implement users