fix(priority): lower priority to make it work with ngIf

fixes #241
closes #242

Author: zhouzi

dist/tinymce.min.js

@@ -13,7 +13,7 @@ angular.module('ui.tinymce', [])
 
     return {
       require: ['ngModel', '^?form'],
-      priority: 999,
+      priority: 599,
       link: function(scope, element, attrs, ctrls) {
         if (!$window.tinymce) {
           return;

src/tinymce.js

@@ -148,4 +148,9 @@ describe('uiTinymce', function () {
     });
   });*/
 
+  it('should work with the ng-if directive', function () {
+    expect(function () {
+      $compile('<textarea ng-if="show" ui-tinymce data-ng-model="foo"></textarea>')(scope);
+    }).not.toThrow();
+  });
 });