Add rspec test to add user
Add "add user" form to index
Update index.erb
Add user sign up and sign in functionality
* add sign up form
* add sign in form
* store info to database
* add validations on signup input
* add validations on signin input
* add redirects based on signin
working mvp user login and user creation
ignore sqlite3 files
fixed merge conflicts
Merge pull request #5 from gopher-snakes-2013/user_signup

User signup