Move from cross-spawn-async to cross-spawn

Author: mgol

Gruntfile.js

@@ -8,7 +8,7 @@
 
 'use strict';
 
-const spawn = require('cross-spawn-async');
+const spawn = require('cross-spawn');
 
 module.exports = function (grunt) {
     require('time-grunt')(grunt);

package.json

@@ -39,7 +39,7 @@
   "devDependencies": {
     "babel-preset-es2015": "6.18.0",
     "convert-source-map": "1.3.0",
-    "cross-spawn-async": "2.2.4",
+    "cross-spawn": "4.0.2",
     "eslint-config-mgol": "0.0.33",
     "expect.js": "0.3.1",
     "grunt": "1.0.1",