refactor build scripts

util/version.js

@@ -1,25 +0,0 @@
-#!/usr/bin/env node
-
-'use strict';
-
-var fs = require('fs');
-var shell = require('shelljs');
-
-var getCommitHash = function() {
-  //exec git command to get the hash of the current commit
-  //git rev-parse HEAD
-
-  var hash = shell.exec('git rev-parse HEAD', {
-    silent: true
-  }).output.trim().substr(0, 7);
-  return hash;
-}
-
-var commitHash = getCommitHash();
-var json = JSON.parse(fs.readFileSync('./package.json', 'utf8'));
-console.log('v' + json.version + ' #' + commitHash);
-
-var content = 'window.version="' + json.version + '";';
-content = content + '\nwindow.commitHash="' + commitHash + '";';
-fs.writeFileSync("./src/js/version.js", content);
-