fix rollup-error and use commonjs for the rollup-config

public/package.json

@@ -6,7 +6,7 @@
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
     "jshint": "cd js && jshint .",
-		"bundle": "cd js && rollup -c rollup.config.js"
+		"bundle": "rollup -c rollup.config.js"
   },
   "author": "",
   "license": "ISC",

public/rollup.config.js

@@ -1,8 +1,8 @@
 
-export default {
-	input: 'main.js',
+module.exports = {
+	input: 'js/main.js',
 	output: {
-		file :'bundle.js',
+		file :'js/bundle.js',
 		format: 'iife',
 		sourcemap: true,
 		compact: true