Make npm command verbose

Author: Ilya Radchenko

lib/npm-command.js

@@ -4,7 +4,7 @@ var npm = process.platform === 'win32' ? 'npm.cmd' : 'npm';
 
 module.exports = function (command, globals) {
   var hasGlobals = globals && globals.length;
-  var args = [command, '--color=always'];
+  var args = [command, '--color=always', '--verbose'];
 
   if (hasGlobals) {
     args = args.concat(globals);