Add AppVeyor config to publish to github-pages

.gitignore

@@ -4,4 +4,5 @@ bin/
 obj/
 paket-files/
 .vs/
-*.user
+*.user
+publish/

appveyor.yml

@@ -0,0 +1,22 @@
+version: 0.1.{build}
+image: Visual Studio 2017
+
+build:
+  verbosity: minimal
+
+branches:
+  only:
+  - master
+
+init:
+- git config --global core.autocrlf input
+
+build_script:
+- ps: dotnet publish src/WebFsc.Client/ -o $PWD/publish/ -c Release
+
+on_success:
+- ps: .\tools\gh-pages.ps1 -env appveyor
+
+environment:
+  GH_TOKEN:
+    secure: dhFy1eZoqG4QPkKTuLFxix7QQMxaIyIpYjkvTU3CukYZz1CEOJeHfBSaT8tkPsGL

tools/gh-pages.ps1

@@ -0,0 +1,42 @@
+# pushes src/wwwroot to gh-pages branch
+
+param ([string] $env = "local")
+
+$msg = 'gh-pages.ps1: src/WebFsc.Client/wwwroot -> gh-pages'
+$gitURL = "https://github.com/fsbolero/TryFSharpOnWasm"
+
+write-host -foregroundColor "green" "=====> $msg"
+
+function clearDir() {
+  rm -r build/gh-pages -errorAction ignore
+}
+
+if ($env -eq "appveyor") {
+  clearDir
+  $d = mkdir -force build
+  git clone $gitURL build/gh-pages -b gh-pages --single-branch
+  cd build/gh-pages
+  git config credential.helper "store --file=.git/credentials"
+  $t = $env:GH_TOKEN
+  $cred = "https://" + $t + ":@github.com"
+  $d = pwd
+  [System.IO.File]::WriteAllText("$pwd/.git/credentials", $cred)
+  git config user.name "AppVeyor"
+  git config user.email "websharper-support@intellifactory.com"
+} else {
+  clearDir
+  cd build
+  git clone .. gh-pages -b gh-pages --single-branch
+  cd gh-pages
+}
+
+git rm -rf *
+cp -r -force ../../publish/WebFsc.Client/dist/* .
+echo $null >> .nojekyll
+(get-content '.\index.html' -encoding utf8).replace('<base href="/"', '<base href="/TryFSharpOnWasm/"') | set-content '.\index.html' -encoding utf8
+git add . 2>git.log
+git commit --amend -am $msg
+git push -f -u origin gh-pages
+cd ../..
+clearDir
+write-host -foregroundColor "green" "=====> DONE"