tweak github bundle provider.

laravel/cli/tasks/bundle/providers/github.php

@@ -10,7 +10,7 @@ class Github implements Provider {
 	 */
 	public function install($bundle)
 	{
-		$repository = "git://github.com/{$bundle['location']}.git";
+		$repository = "git@github.com:{$bundle['location']}.git";
 
 		// We need to just extract the basename of the bundle path when
 		// adding the submodule. Of course, we can't add a submodule to