Test on Windows

appveyor.yml

@@ -0,0 +1,16 @@
+install:
+  - choco install jq
+  - choco install rsync
+  - node --version
+  - npm --version
+  - npm install
+  - pip install --upgrade pip
+  - pip install pipenv
+  - pipenv install cram
+  - bash ./tests/pre-download-elm-packages.sh
+
+build: off
+
+test_script:
+  - bash ./tests/make_links.sh
+  - pipenv run cram -v ./tests

tests/pre-download-elm-packages.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -ex
+
+echo "Pre-downloading required elm packages"
+yes | ./node_modules/.bin/elm init
+yes | ./node_modules/.bin/elm install elm/json
+yes | ./node_modules/.bin/elm install elm/core
+yes | ./node_modules/.bin/elm install elm/time
+yes | ./node_modules/.bin/elm install elm/random
+yes | ./node_modules/.bin/elm install elm/virtual-dom
+yes | ./node_modules/.bin/elm install elm/html
+yes | ./node_modules/.bin/elm install NoRedInk/elm-json-decode-pipeline
+yes | ./node_modules/.bin/elm install elm-explorations/webgl
+rm elm.json