fix failing test due to Windows Search service not running

Author: jjw24

Flow.Launcher.Test/Plugins/ExplorerTest.cs

@@ -10,6 +10,10 @@
 
 namespace Flow.Launcher.Test.Plugins
 {
+    /// <summary>
+    /// These tests require the use of CSearchManager class from Microsoft.Search.Interop.
+    /// Windows Search service needs to be running to complete the tests
+    /// </summary>
     [TestFixture]
     public class ExplorerTest
     {

appveyor.yml

@@ -4,6 +4,7 @@ init:
 - ps: |
       $version = new-object System.Version $env:APPVEYOR_BUILD_VERSION
       $env:flowVersion = "{0}.{1}.{2}" -f $version.Major, $version.Minor, $version.Build
+- sc config WSearch start= auto # Starts Windows Search service- Needed for running ExplorerTest
 
 assembly_info:
   patch: true