References
Reference NO 1
http://stackoverflow.com/questions/17640262/laravel-4-failing-authattempt-with-hash-replacement
Reference NO 2
http://forums.laravel.io/viewtopic.php?id=11240
Reference NO 3
http://codehappy.daylerees.com/authentication
Reference NO 4
http://laravelbook.com/laravel-user-authentication/
Reference NO 5
https://github.com/laravel/framework/issues/137
Reference NO 6
https://github.com/laravel/framework/issues/1871
Reference NO 7
http://four.laravel.com/docs/security
Reference NO 8
http://scotch.io/bar-talk/x/simple-and-easy-laravel-login-authentication