Merge pull request #7 from noc0dev/fix/badge

Switch PyPI badge to shields.io

Author: turian

README.md

@@ -9,7 +9,7 @@
 </p>
 
 <p align="center">
-  <a href="https://pypi.org/project/fastmail-cli/"><img src="https://badge.fury.io/py/fastmail-cli.svg" alt="PyPI version"></a>
+  <a href="https://pypi.org/project/fastmail-cli/"><img src="https://img.shields.io/pypi/v/fastmail-cli" alt="PyPI version"></a>
   <a href="https://opensource.org/licenses/Apache-2.0"><img src="https://img.shields.io/badge/License-Apache_2.0-blue.svg" alt="License"></a>
 </p>