updated helper file

Author: cs-raj

lib/helper.js

@@ -16,7 +16,7 @@ var prompt = require('prompt');
 var ncp = require('ncp').ncp;
 var mkdirp = require('mkdirp');
 var chalk = require('chalk');
-const sanitizePath = require('./Utility');
+const sanitizePath = require('./utility');
 var log = console.log;
 var success = chalk.green;
 var error = chalk.red;