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 small merge conflict in questions controller
fix merge conflicts
fix small error in the show question view
Merge pull request #8 from purple-martins-2013/implement-users

Implement users
separate answers on different lines