Add Backer

Author: prateekiiest

README.md

@@ -7,6 +7,7 @@
 [![Build status](https://ci.appveyor.com/api/projects/status/ugq1vwa8045p307g?svg=true)](https://ci.appveyor.com/project/prateekiiest/code-sleep-python)
 [![Build Status](https://travis-ci.org/prateekiiest/Code-Sleep-Python.svg?branch=master)](https://travis-ci.org/prateekiiest/Code-Sleep-Python)
 <img src="https://opencollective.com/code-sleep-python/tiers/sponsor/badge.svg?label=sponsor&color=brightgreen" />
+<img src="https://opencollective.com/code-sleep-python/tiers/backer/badge.svg?label=backer&color=brightgreen" />
 [![License MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://github.com/prateekiiest/Code-Sleep-Python/blob/master/LICENSE)
 [![chat on Slack](https://img.shields.io/badge/chat%20on%20-Slack-blue.svg)](https://join.slack.com/t/code-sleep-python/shared_invite/enQtMzE0NTIwNzY0MTM1LWFhNGY0NWQ0MDIxNjZmMzgyMzlhOTk3YTY4YjQwNjJmOGIyMTZiNzA4MzkwZWE0ZjgyOWQ2MmMzMWJlMDExMjY)
 [![made with &hearts in Python](https://img.shields.io/badge/made%20with%20%E2%9D%A4%20in-Python-red.svg)](http://shields.io/#your-badge)