chore: update class name for services to have Service suffix

Fixes #531

Author: Brocco

addon/ng2/blueprints/service/files/__path__/__name__.service.spec.ts

@@ -9,7 +9,7 @@ import {
   injectAsync
 } from 'angular2/testing';
 import {provide} from 'angular2/core';
-import {<%= classifiedModuleName %>} from './<%= dasherizedModuleName %>.service';
+import {<%= classifiedModuleName %>Service} from './<%= dasherizedModuleName %>.service';
 
 describe('<%= classifiedModuleName %> Service', () => {
 

addon/ng2/blueprints/service/files/__path__/__name__.service.ts

@@ -1,7 +1,7 @@
 import {Injectable} from 'angular2/core';
 
 @Injectable()
-export class <%= classifiedModuleName %> {
+export class <%= classifiedModuleName %>Service {
 
   constructor() {}
 

addon/ng2/blueprints/service/files/__path__/index.ts

@@ -1 +1 @@
-export {<%= classifiedModuleName %>} from './<%= dasherizedModuleName %>.service';
+export {<%= classifiedModuleName %>Service} from './<%= dasherizedModuleName %>.service';