Updating ng-flow to add to the angular module

This is more in line with what angularjs/angular.d.ts intends

ng-flow/ng-flow.d.ts

@@ -3,8 +3,9 @@
 // Definitions by: Ryan McNamara <https://github.com/ryan10132>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 /// <reference path="../flowjs/flowjs.d.ts" />
+/// <reference path="../angularjs/angular.d.ts" />
 
-declare namespace ng.flow {
+declare namespace angular.flow {
     interface IFlowFactory {
         create(options?: flowjs.IFlowOptions): flowjs.IFlow;
     }