Merge pull request #2 from phpro/improve-shell

Load Phar directly from PHP in shell mode

grumphp

@@ -1,2 +1,10 @@
-#!/usr/bin/env bash
-$(which php) "$(dirname "$0")/grumphp.phar" "$@"
+#!/usr/bin/env php
+<?php
+if (!in_array('phar', stream_get_wrappers(), true)) {
+    throw new \RuntimeException(
+        'GrumPHP-shim requires PHAR to be enabled. Please enable the extension or use the regular GrumPHP version.'
+    );
+}
+
+require 'phar://grumphp.phar/.box/bin/check-requirements.php';
+require 'phar://grumphp.phar/bin/grumphp';