fix: angulartics type definition for ES6 import

angulartics/angulartics-tests.ts

@@ -1,3 +1,6 @@
+import * as angular from 'angular';
+import { angulartics } from 'angulartics';
+
 namespace Analytics {
     angular.module("angulartics.app", ["angulartics"])
         .config(["$analyticsProvider", ($analyticsProvider:angulartics.IAnalyticsServiceProvider) => {
@@ -36,3 +39,4 @@ namespace Analytics {
             $analytics.setSuperProperties({ role: 'admin' });
         });
 }
+

angulartics/index.d.ts

@@ -4,6 +4,9 @@
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 /// <reference types="angular" />
+
+import * as angular from 'angular';
+
 declare namespace angulartics {
 
     interface IAngularticsStatic {