Fixing for node 4

Author: Matt Gaunt

src/cli.js

@@ -1,5 +1,6 @@
 #! /usr/bin/env node
 /* eslint consistent-return:0*/
+'use strict';
 
 const webPush = require('../src/index.js');
 

test/test-cli.js

@@ -13,7 +13,7 @@
 
   const cliPath = 'src/cli.js';
 
-  suite('Test Encryption Helpers', function() {
+  suite('Test CLI', function() {
     test('no args run', function() {
       return new Promise(function(resolve) {
         const webpushCLISpawn = spawn('node', [