Remove terminal: true, replace with priority: 1

This fixes angular 1.5 compability issues. Original idea by @akotlar, just making the pull request. Seems a better solution to leocaseiro#158 than my initial approach.

Author: 000panther

src/chosen.coffee

@@ -33,7 +33,7 @@ angular.module('localytics.directives').directive 'chosen', ['$timeout', ($timeo
 
   restrict: 'A'
   require: '?ngModel'
-  terminal: true
+  priority: 1
   link: (scope, element, attr, ngModel) ->
 
     element.addClass('localytics-chosen')
@@ -106,4 +106,4 @@ angular.module('localytics.directives').directive 'chosen', ['$timeout', ($timeo
 
       scope.$on '$destroy', (event) ->
         $timeout.cancel timer if timer?
-]
+]