Update README.rst

README.rst

@@ -6,19 +6,12 @@ Planetary Input / Output
    :alt: Join the chat at https://gitter.im/USGS-Astrogeology/plio
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-   :target: http://plio.readthedocs.io/en/latest/?badge=latest
-   :alt: Documentation Status
-
 
 A planetary file I/O API