use non-deprecated cross-spawn package (#294)

Author: VictorVation

index.js

@@ -11,7 +11,7 @@ var gutil = require('gulp-util');
 var osTmpdir = require('os-tmpdir');
 var pathExists = require('path-exists');
 var rimraf = require('rimraf');
-var spawn = require('cross-spawn-async');
+var spawn = require('cross-spawn');
 var logger = require('./lib/logger');
 var utils = require('./lib/utils');
 

package.json

@@ -42,7 +42,7 @@
   ],
   "dependencies": {
     "convert-source-map": "^1.0.0",
-    "cross-spawn-async": "^2.0.0",
+    "cross-spawn": "^4.0.2",
     "dargs": "^2.0.3",
     "each-async": "^1.0.0",
     "escape-string-regexp": "^1.0.3",