add users model
users controller and basic views
sign up link on nav bar
sessions controller to handle logging in
current_user helper and log out functionality
basic errors on forms
add name to users table. Should be set to null: false, but it doesn't work...
add bullshit email validation spec
user factory
Merge branch 'master' into user-authentication
Merge branch 'master' into user-authentication
derpy admin authentication for admin controller
fix comment wording
describe what the it block is doing - 'it do' looks dumb
validate presence of password on create