add jshrink thin wrapper

lib/Minify/JS/JShrink.php

@@ -0,0 +1,47 @@
+<?php
+/**
+ * Class Minify\JS\JShrink
+ *
+ * @package Minify
+ */
+
+namespace Minify\JS;
+
+/**
+ * Wrapper to Javascript Minifier built in PHP http://www.tedivm.com
+ *
+ * @package Minify
+ * @author  Elan Ruusamäe <glen@pld-linux.org>
+ * @link    https://github.com/tedious/JShrink
+ *
+ */
+class JShrink
+{
+    /**
+     * Contains the default options for minification. This array is merged with
+     * the one passed in by the user to create the request specific set of
+     * options (stored in the $options attribute).
+     *
+     * @var string[]
+     */
+    protected static $defaultOptions = array('flaggedComments' => true);
+
+    /**
+     * Takes a string containing javascript and removes unneeded characters in
+     * order to shrink the code without altering it's functionality.
+     *
+     * @param  string $js      The raw javascript to be minified
+     * @param  array  $options Various runtime options in an associative array
+     *
+     * @see JShrink\Minifier::minify()
+     * @return string
+     */
+    public static function minify($js, array $options = array())
+    {
+        $options = array_merge(
+            self::$defaultOptions,
+            $options
+        );
+        return \JShrink\Minifier::minify($js, $options);
+    }
+}