removed depercated wrench and replaces it with nodes fs

Author: piu130

generators/app/templates/_package.json

@@ -96,8 +96,7 @@
 <% if (qrCode) { -%>
     "qrcode-terminal": "~0.10.0",
 <% } -%>
-    "uglify-save-license": "~0.4.1",
-    "wrench": "~1.5.8"
+    "uglify-save-license": "~0.4.1"
   },
   "engines": {
     "node": ">=0.10.0"

generators/app/templates/gulpfile.js

@@ -6,14 +6,14 @@
 
 'use strict';
 
+var fs = require('fs');
 var gulp = require('gulp');
-var wrench = require('wrench');
 
 /**
  *  This will load all js or coffee files in the gulp directory
  *  in order to load all gulp tasks
  */
-wrench.readdirSyncRecursive('./gulp').filter(function(file) {
+fs.readdirSync('./gulp').filter(function(file) {
   return (/\.(js|coffee)$/i).test(file);
 }).map(function(file) {
   require('./gulp/' + file);

npm-shrinkwrap.json

@@ -48,8 +48,7 @@
     "mz": "~2.0.0",
     "recursive-readdir": "~1.2.1",
     "sinon": "~1.17.1",
-    "sinon-chai": "~2.8.0",
-    "wrench": "1.5.8"
+    "sinon-chai": "~2.8.0"
   },
   "engines": {
     "node": ">=0.10.0"