Update README.rst

README.rst

@@ -10,14 +10,14 @@ Planetary Input / Output
         :target: https://pypi.python.org/pypi/plio
 
 .. image:: https://travis-ci.org/USGS-Astrogeology/plio.svg?branch=master
-    :target: https://travis-ci.org/USGS-Astrogeology/plio
+   :target: https://travis-ci.org/USGS-Astrogeology/plio
 
 .. image:: https://coveralls.io/repos/github/USGS-Astrogeology/plio/badge.svg?branch=master 
-    :target: https://coveralls.io/github/USGS-Astrogeology/plio?branch=master
+   :target: https://coveralls.io/github/USGS-Astrogeology/plio?branch=master
 
 .. image:: https://readthedocs.org/projects/plio/badge/?version=latest
-    :target: http://plio.readthedocs.io/en/latest/?badge=latest
-    :alt: Documentation Status
+   :target: http://plio.readthedocs.io/en/latest/?badge=latest
+   :alt: Documentation Status
 
 
 A planetary file I/O API