Add CodeClimate badges
Add CodeClimate badges

[![Code Climate](https://codeclimate.com/github/fistlab/php/badges/gpa.svg)](https://codeclimate.com/github/fistlab/php)
[![Test Coverage](https://codeclimate.com/github/fistlab/php/badges/coverage.svg)](https://codeclimate.com/github/fistlab/php/coverage)
[![Issue Count](https://codeclimate.com/github/fistlab/php/badges/issue_count.svg)](https://codeclimate.com/github/fistlab/php)
fistlab/php,fistlab/php