rounded corners for badges

Author: Ahmad Nassri

README.md

@@ -152,20 +152,20 @@ Made with ♥ from the [Mashape](https://www.mashape.com/) team
 [license-url]: https://github.com/Mashape/unirest-python/blob/master/LICENSE
 
 [gitter-url]: https://gitter.im/Mashape/unirest-python
-[gitter-image]: https://img.shields.io/badge/Gitter-Join%20Chat-blue.svg?style=flat-square
+[gitter-image]: https://img.shields.io/badge/Gitter-Join%20Chat-blue.svg?style=flat
 
 [travis-url]: https://travis-ci.org/Mashape/unirest-python
-[travis-image]: https://img.shields.io/travis/Mashape/unirest-python.svg?style=flat-square
+[travis-image]: https://img.shields.io/travis/Mashape/unirest-python.svg?style=flat
 
 [pypi-url]: https://pypi.python.org/pypi/Unirest/
-[pypi-license]: https://img.shields.io/pypi/l/Unirest.svg?style=flat-square
-[pypi-version]: https://img.shields.io/pypi/v/Unirest.svg?style=flat-square
-[pypi-downloads]: https://img.shields.io/pypi/dm/Unirest.svg?style=flat-square
+[pypi-license]: https://img.shields.io/pypi/l/Unirest.svg?style=flat
+[pypi-version]: https://img.shields.io/pypi/v/Unirest.svg?style=flat
+[pypi-downloads]: https://img.shields.io/pypi/dm/Unirest.svg?style=flat
 
 [codeclimate-url]: https://codeclimate.com/github/Mashape/unirest-python
-[codeclimate-quality]: https://img.shields.io/codeclimate/github/Mashape/unirest-python.svg?style=flat-square
-[codeclimate-coverage]: https://img.shields.io/codeclimate/coverage/github/Mashape/unirest-python.svg?style=flat-square
+[codeclimate-quality]: https://img.shields.io/codeclimate/github/Mashape/unirest-python.svg?style=flat
+[codeclimate-coverage]: https://img.shields.io/codeclimate/coverage/github/Mashape/unirest-python.svg?style=flat
 
 [versioneye-url]: https://www.versioneye.com/user/projects/54b82a8905064657eb00024e
-[versioneye-image]: https://img.shields.io/versioneye/d/user/projects/54b82a8905064657eb00024e.svg?style=flat-square
+[versioneye-image]: https://img.shields.io/versioneye/d/user/projects/54b82a8905064657eb00024e.svg?style=flat