Added login/logout
Added tests
Fixed bug after refactor
Cleaned up code and added tests
removed comment
Cleaned code and prevented signup/login when signed in
deleted .swp not caught by global .gitignore
Added before_action statements to app controller
Refactored code, ensured only signed in users could post
Minor edits to session#load_user
Added new test
Merge pull request #19 from andycandrea/user-authentication

User authentication