Do an empty commit to gh-pages branch after publishing artifacts to trigger a git hub pages build (fixes #277).

.appveyor/afterDeploy.ps1

@@ -0,0 +1,8 @@
+Write-Host "Deployment finished -> do en empty commit on the gh-pages branch to update the page"
+git config --global user.email "noreply@vocaluxe.org"
+git config --global user.name "VocaluxeBuildBot"
+git checkout "gh-pages"
+git reset --hard HEAD
+git commit --allow-empty -m "Trigger page update after a new publish"
+git push -q "https://$($Env:GitHubKey):x-oauth-basic@github.com/Vocaluxe/Vocaluxe.git" "gh-pages"
+git checkout -

appveyor.yml

@@ -80,6 +80,8 @@ after_build:
 test: off
 before_deploy:
 - ps: ./.appveyor/prepareDeploy.ps1
+after_deploy:
+- ps: ./.appveyor/afterDeploy.ps1
 deploy:
 - provider: GitHub
   tag: $(APPVEYOR_REPO_TAG_NAME)