Move process.nextTick() to run() method

Hope this fixes the tests. Thanks @janmeier

lib/emitters/custom-event-emitter.js

@@ -5,17 +5,19 @@ module.exports = (function() {
   var CustomEventEmitter = function(fct) {
     this.fct = fct;
     var self = this;
+  }
+  util.inherits(CustomEventEmitter, EventEmitter)
+
+  CustomEventEmitter.prototype.run = function() {
+    var self = this;
+    
     process.nextTick(function() {
       if (self.fct) {
         self.fct.call(self, self)
       }
     }.bind(this));
-  }
-  util.inherits(CustomEventEmitter, EventEmitter)
     
-  CustomEventEmitter.prototype.run = function() {
-    var self = this
-    return this
+    return this;
   }
 
   CustomEventEmitter.prototype.success =