Specify Node version for AppVeyor builds. Indicate whether browser automation tests are running.

.appveyor.yml

@@ -1,5 +1,7 @@
 init:
   - git config --global core.autocrlf true
+install:
+   - ps: Install-Product node 6.9.2 x64
 branches:
   only:
     - master

test/Templates.Test/SpaTemplateTest.cs

@@ -1,4 +1,5 @@
 using OpenQA.Selenium;
+using System;
 using Templates.Test.Helpers;
 using Xunit;
 
@@ -27,6 +28,8 @@ namespace Templates.Test
 
                 if (EnableBrowserAutomationTesting)
                 {
+                    Console.WriteLine("Starting browser automation tests...");
+
                     using (var browser = aspNetProcess.VisitInBrowser())
                     {
                         TestBasicNavigation(browser);