add badges, fix badge URLs

Author: petercorke

README.md

@@ -1,5 +1,7 @@
+![PyPI - Downloads](https://img.shields.io/pypi/dm/ansitable)
 [![PyPI version fury.io](https://badge.fury.io/py/ansitable.svg)](https://pypi.python.org/pypi/ansitable/)
-[![PyPI status](https://img.shields.io/pypi/status/ansicolortags.svg)](https://pypi.python.org/pypi/ansitable/)
+[![PyPI pyversions](https://img.shields.io/pypi/pyversions/ansitable)](https://pypi.python.org/pypi/ansitable/)
+[![PyPI status](https://img.shields.io/pypi/status/ansitable.svg)](https://pypi.python.org/pypi/ansitable/)
 [![Maintenance](https://img.shields.io/badge/Maintained%3F-yes-green.svg)](https://github.com/petercorke/ansitable/graphs/commit-activity)
 [![GitHub license](https://img.shields.io/github/license/Naereen/StrapDown.js.svg)](https://github.com/petercorke/ansitable/blob/master/LICENSE)