Drop the utm tags from the Gitter.im URL

README.md

@@ -1,6 +1,6 @@
 # Jet Template Engine for Go [![Build Status](https://travis-ci.org/CloudyKit/jet.svg?branch=master)](https://travis-ci.org/CloudyKit/jet) [![Build status](https://ci.appveyor.com/api/projects/status/5g4whw3c6518vvku?svg=true)](https://ci.appveyor.com/project/CloudyKit/jet)
 
-[![Join the chat at https://gitter.im/CloudyKit/jet](https://badges.gitter.im/CloudyKit/jet.svg)](https://gitter.im/CloudyKit/jet?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![Join the chat at https://gitter.im/CloudyKit/jet](https://badges.gitter.im/CloudyKit/jet.svg)](https://gitter.im/CloudyKit/jet)
 
 Jet is a template engine developed to be easy to use, powerful, dynamic, yet secure and very fast.