Attempt to push nuget packages to appveyor project feed (account feeds are password protected)

If successful we can likely build on every commit as only tags will be published to the feed
(the packages will still be build and can be obtained from the artifacts from every build for manual testing)

Author: amaitland

appveyor.yml

@@ -20,9 +20,9 @@ artifacts:
     name: nupkgfiles
 
 # Publish to appveyor nuget feed
-deploy:
-  provider: NuGet
-  server: https://ci.appveyor.com/nuget/cefsharp-ci
-  api_key:
-    secure: vNESC6IT/8JSw4bcX9i68/mj0K1Jhq1apofM4pQtbuw=
-  artifact: nupkgfiles
+#deploy:
+  #provider: NuGet
+  #server: https://ci.appveyor.com/nuget/cefsharp-ci
+  #api_key:
+  #  secure: vNESC6IT/8JSw4bcX9i68/mj0K1Jhq1apofM4pQtbuw=
+  #artifact: nupkgfiles

build.ps1

@@ -388,6 +388,13 @@ function Nupkg
     [System.IO.File]::WriteAllLines($Filename, $Text)
 
     . $Nuget pack nuget\cef.sdk.nuspec -NoPackageAnalysis -Version $CefPackageVersion -OutputDirectory nuget
+	
+	if ($env:APPVEYOR_REPO_TAG -eq "True")
+    {
+        appveyor PushArtifact "nuget\cef.redist.x86.$CefPackageVersion.nupkg"
+		appveyor PushArtifact "nuget\cef.redist.x64.$CefPackageVersion.nupkg"
+		appveyor PushArtifact "nuget\cef.sdk.$CefPackageVersion.nupkg"
+    }
 }
 
 function DownloadNuget()