Fix Github badges

README.md

@@ -2,7 +2,8 @@
 [![Build Status](https://travis-ci.org/pasupulaphani/node-cache-redis.svg?branch=master)](https://travis-ci.org/pasupulaphani/node-cache-redis)
 [![Coverage Status](https://coveralls.io/repos/github/pasupulaphani/node-cache-redis/badge.svg?branch=master)](https://coveralls.io/github/pasupulaphani/node-cache-redis?branch=master)
 [![Dependency Status](https://www.versioneye.com/user/projects/583c520dd2d44d003fb603be/badge.svg?style=flat-square)](https://www.versioneye.com/user/projects/583c520dd2d44d003fb603be)
-(https://img.shields.io/badge/gratipay-donate-yellow.svg?style=flat-square)](https://gratipay.com/simple-redis-cache/)
+[![](https://img.shields.io/badge/gratipay-donate-yellow.svg?style=flat-square)](https://gratipay.com/simple-redis-cache/)
+
 
 # node-cache-redis [![See on Github](https://github.com/themes/tactile/images/octocat-icon.png)](https://github.com/pasupulaphani/node-cache-redis)