fix(di): allow injecting event emitter fns without specifying type annotation

Fixes #965

Closes #1155

modules/angular2/src/core/annotations/di.js

@@ -12,6 +12,10 @@ export class EventEmitter extends DependencyAnnotation {
     super();
     this.eventName = eventName;
   }
+
+  get token() {
+    return Function;
+  }
 }
 
 /**
@@ -25,6 +29,10 @@ export class PropertySetter extends DependencyAnnotation {
     super();
     this.propName = propName;
   }
+
+  get token() {
+    return Function;
+  }
 }
 
 /**