message: Remove reference to Jenkins
diff: |CI|Status|
  |---|---|
  |Travis|[![Build Status](https://travis-ci.org/pagespeed/mod_pagespeed.svg?branch=master)](https://travis-ci.org/pagespeed/mod_pagespeed)|
  -|Jenkins (CentOS5)|[![Build Status](http://104.154.17.78:8080/buildStatus/icon?job=mod_pagespeed)](http://104.154.17.78:8080/job/mod_pagespeed)|
  `mod_pagespeed` is an open-source Apache module created by Google to help Make the Web Faster by rewriting web pages to reduce latency and bandwidth.
  