add badge

README.md

@@ -10,13 +10,12 @@
 </h4>
 
 <p align="center">
-<!-- https://shields.io/ is a good source of these -->
-<a href="https://travis-ci.org/SciTools/iris/branches">
-<img src="https://api.travis-ci.org/repositories/SciTools/iris.svg?branch=master"
-     alt="Travis-CI" /></a>
+<a href="https://cirrus-ci.com/github/SciTools/iris">
+<img src="https://api.cirrus-ci.com/github/SciTools/iris.svg?branch=master"
+     alt="Cirrus-CI" /></a>
 <a href='https://scitools-iris.readthedocs.io/en/latest/?badge=latest'>
-    <img src='https://readthedocs.org/projects/scitools-iris/badge/?version=latest'
-    alt='Documentation Status' /></a>
+<img src='https://readthedocs.org/projects/scitools-iris/badge/?version=latest'
+     alt='Documentation Status' /></a>
 <a href="https://anaconda.org/conda-forge/iris">
 <img src="https://img.shields.io/conda/dn/conda-forge/iris.svg"
      alt="conda-forge downloads" /></a>
@@ -26,9 +25,6 @@
 <a href="https://github.com/SciTools/iris/releases">
 <img src="https://img.shields.io/github/tag/SciTools/iris.svg"
      alt="Latest version" /></a>
-<a href="https://scitools.org.uk/iris/docs/latest/index.html">
-<img src="https://img.shields.io/badge/docs-stable-green.svg"
-     alt="Stable docs" /></a>
 <a href="https://github.com/SciTools/iris/commits/master">
 <img src="https://img.shields.io/github/commits-since/SciTools/iris/latest.svg"
      alt="Commits since last release" /></a>