Create the thing

index.js

@@ -0,0 +1,34 @@
+'use strict';
+
+var path = require('path');
+var fs = require('fs');
+var autoprefixer = require('broccoli-autoprefixer');
+
+function AutoprefixerPlugin(options) {
+  this.name = 'ember-cli-autoprefixer';
+  this.ext = 'css';
+  this.options = options || {};
+}
+
+AutoprefixerPlugin.prototype.toTree = function(tree) {
+  return autoprefixer(tree, this.options);
+};
+
+function EmberCLIAutoprefixer(project) {
+  this.project = project;
+  this.name = 'Ember CLI Autoprefixer';
+}
+
+EmberCLIAutoprefixer.prototype.treeFor = function treeFor() {
+};
+
+EmberCLIAutoprefixer.prototype.included = function included(app) {
+  var registry = app.registry;
+  this.app = app;
+
+  var plugin = new AutoprefixerPlugin(this.app.options.autoprefixerOptions);
+
+  registry.add('css', plugin);
+};
+
+module.exports = EmberCLIAutoprefixer;