Fix build on Windows

Closes #1233

- Handle path-separators properly. Use "path.sep" instead of "/".
  Or use "require.resolve()" if possible
- Use "execFile" instead of "exec" to run the Handlebars executable.
  This prevents problems due to (missing) shell escaping.
- Use explicit call to "node" in order to run the executable on Windows.
- Add "appveyor"-CI in order to run regular tests on Windows.

README.markdown

@@ -1,4 +1,5 @@
 [![Travis Build Status](https://img.shields.io/travis/wycats/handlebars.js/master.svg)](https://travis-ci.org/wycats/handlebars.js)
+[![Appveyor Build Status](https://ci.appveyor.com/api/projects/status/github/wycats/handlebars.js?branch=master&svg=true)](https://ci.appveyor.com/project/wycats/handlebars-js)
 [![Selenium Test Status](https://saucelabs.com/buildstatus/handlebars)](https://saucelabs.com/u/handlebars)
 
 Handlebars.js

appveyor.yml

@@ -0,0 +1,38 @@
+# Test against these versions of Node.js
+environment:
+  matrix:
+    - nodejs_version: "4"
+    - nodejs_version: "5"
+
+platform:
+  - x64
+
+# Install scripts (runs after repo cloning)
+install:
+  # Get the latest stable version of Node.js
+  - ps: Install-Product node $env:nodejs_version $env:platform
+  # Clone submodules (mustache spec)
+  - cmd: git submodule update --init --recursive
+  # Install modules
+  - cmd: npm install
+  - cmd: npm install -g grunt-cli
+
+
+# Post-install test scripts
+test_script:
+  # Output useful info for debugging
+  - cmd: node --version
+  - cmd: npm --version
+  # Run tests
+  - cmd: grunt --stack travis
+
+# Don't actually build
+build: off
+
+on_failure:
+  - cmd: 7z a coverage.zip coverage
+  - cmd: appveyor PushArtifact coverage.zip
+
+
+# Set build version format here instead of in the admin panel
+version: "{build}"

spec/env/browser.js

@@ -9,7 +9,8 @@ var filename = 'dist/handlebars.js';
 if (global.minimizedTest) {
   filename = 'dist/handlebars.min.js';
 }
-vm.runInThisContext(fs.readFileSync(__dirname + '/../../' + filename), filename);
+var distHandlebars = fs.readFileSync(require.resolve(`../../${filename}`), 'utf-8');
+vm.runInThisContext(distHandlebars, filename);
 
 global.CompilerContext = {
   browser: true,

spec/env/runner.js

@@ -15,7 +15,7 @@ if (grep === '--min') {
 
 var files = fs.readdirSync(testDir)
       .filter(function(name) { return (/.*\.js$/).test(name); })
-      .map(function(name) { return testDir + '/' + name; });
+      .map(function(name) { return testDir + path.sep + name; });
 
 if (global.minimizedTest) {
   run('./runtime', function() {

tasks/test.js

@@ -6,9 +6,15 @@ module.exports = function(grunt) {
   grunt.registerTask('test:bin', function() {
     var done = this.async();
 
+    var cmd = './bin/handlebars';
+    var args = [ '-a', 'spec/artifacts/empty.handlebars' ];
+
     // On Windows, the executable handlebars.js file cannot be run directly
-    var prefix = os.type().match(/^Windows/) ? process.argv[0] : '';
-    childProcess.exec(prefix + ' ./bin/handlebars -a spec/artifacts/empty.handlebars', function(err, stdout) {
+    if (os.platform() === 'win32') {
+      args.unshift(cmd);
+      cmd = process.argv[0];
+    }
+    childProcess.execFile(cmd, args, function(err, stdout) {
       if (err) {
         throw err;
       }