Changes in app/helpers/session.php

@author - Viraj Khatavkar <viraj.2438@gmail.com>

1. You can now set multiple session values through an array or you can also use the old way as mentioned in smvc documentation. Both are applicable.

E.g. - $session_values = array(
		   	   'key1' => 'value1',
			   'key2' => 'value2',
			   'key3' => 'value3',
			   )

	Now set session as :

	\helpers\session::set($session_values);

 You  can also set by old way \helpers\session::set('username','dev') or pass the value as an array as mentioned above. Both will be accepted.

	The session will be set for all the key-value pairs in  array.