Adding angular resource
readme: added urls
Controllers: refactored SignupBtnCtrl & LoginBtnCtrl

- started adding AlertsCtrl
Readme: added more examples
Login/Signup: added controllers to buttons
Config: set app to use Html5Mode
Calling out to api for login/logout
setup $resource factory for accessing users via api
added form to modals
updated modal templates
navbar: fixed loggedIn
Auth Service: set username/password in SessionService when logging in
Auth Service: set username/password in SessionService when logging in
Login Modal: fixed param names