Update notice for no project specified to clone.

Author: qw3rtman

lib/gg.js

@@ -89,7 +89,7 @@ exports.ignore = function(template) {
 exports.clone = function(repository) {
   // Nothing to clone.
   if (repository === '' || typeof repository === 'undefined') {
-    console.log(notice('[~] You must enter a repository URL.'));
+    console.log(notice('[~] You must enter a repository URL or GitHub project (username/repository).'));
   } else {
     exec('git clone ' + repository, function(error, stdout, stderr) {
       if (stderr.substring(0, 7) === 'Cloning') {