fixed issues with using validator as a global cli

Author: Zack Michael

bin/bids-validator

@@ -1,3 +1,5 @@
+#!/usr/bin/env node
+
 process.title = 'bids-validator';
 var args = process.argv;
 

index.js

@@ -4,6 +4,3 @@ var validate = require('./validators');
 // export validations for use in other applications
 module.exports = validate;
 
-// import and init command line interface
-require('./cli')();
-