Fix composer.json

Author: mhh1422

README.md

@@ -1,5 +1,5 @@
 [![PHP](https://img.shields.io/badge/PHP-5.4+-4F5B93.svg)]()
-[![Packagist](https://img.shields.io/packagist/v/itvisionsy/simple-orm.svg)]()
+[![Packagist](https://img.shields.io/packagist/v/itvisionsy/simple-orm.svg)](https://packagist.org/packages/itvisionsy/simple-orm)
 [![Build Status](https://travis-ci.org/itvisionsy/php-simple-orm.svg?branch=master)](https://travis-ci.org/itvisionsy/php-simple-orm)
 [![license](https://img.shields.io/github/license/itvisionsy/laravel-modules.svg)]()