Class dependency on custom behavior

From
use Phalcon\Mvc\ModelInterface,
    Phalcon\Mvc\Model\BehaviorInterface;

to
use Phalcon\Mvc\Model\Behavior,
    Phalcon\Mvc\Model\BehaviorInterface;
Merge pull request #193 from anggiaj/master

Class dependency on custom behavior
Added support for displaying type of class in header + some tiny fixes
Merge pull request #195 from Cinderella-Man/master

Added support for displaying type of class in header + some tiny fixes(master)
Fixed ODM fields example
Merge pull request #196 from lobostome/patch-1

Fixed ODM fields example
Volt example: link_to for a named route with class
Merge branch 'master' into 1.2.3