Update package badge

Author: laurynas

README.md

@@ -1,7 +1,7 @@
 Detect Language API Python Client
 ========
 
-[![PyPI](https://img.shields.io/pypi/v/detectlanguage.svg)](https://pypi.org/project/detectlanguage/)
+[![PyPI version](https://badge.fury.io/py/detectlanguage.svg)](https://badge.fury.io/py/detectlanguage)
 [![Build Status](https://api.travis-ci.org/detectlanguage/detectlanguage-python.svg)](http://travis-ci.org/detectlanguage/detectlanguage-python)
 
 Detects language of given text. Returns detected language codes and scores.