update travis badges

Author: Ciaran Welsh

ReadMe.md

@@ -1,6 +1,5 @@
 
-| Master        | [![Build Status](https://travis-ci.org/CiaranWelsh/pycotools3.svg?branch=master)](https://travis-ci.org/CiaranWelsh/pycotools3)           |
-| Develop       |[![Build Status](https://travis-ci.org/CiaranWelsh/pycotools3.svg?branch=develop)](https://travis-ci.org/CiaranWelsh/pycotools3)            |
+Master [![Build Status](https://travis-ci.org/CiaranWelsh/pycotools3.svg?branch=master)](https://travis-ci.org/CiaranWelsh/pycotools3)     Develop  [![Build Status](https://travis-ci.org/CiaranWelsh/pycotools3.svg?branch=develop)](https://travis-ci.org/CiaranWelsh/pycotools3)           
 
 pycotools3 is in the process of development. The master branch is stable but experimental and the others should not be used. The next version of pycotools3 will be released in a few weeks.