Add RegExp helper

Author: kylekatarnls

src/JsPhpize/Compiler/Helpers/RegExp.h

@@ -0,0 +1,6 @@
+function ($value) {
+    return (object) array(
+        'isRegularExpression' => true,
+        'regExp' => rtrim($value, 'gimuy'),
+    );
+}