added badges

Author: akaszynski

README.rst

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 pyacvd
 ======
+.. image:: https://img.shields.io/pypi/v/pyacvd.svg
+    :target: https://pypi.org/project/pyacvd/
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+.. image:: https://travis-ci.org/pyvista/pyacvd.svg?branch=master
+    :target: https://travis-ci.org/pyvista/pyacvd
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 This module takes a surface mesh and returns a uniformly meshed surface using voronoi clustering.  This approach is loosely based on research by S. Valette, and J. M. Chassery in `ACVD <https://github.com/valette/ACVD>`_.