Update badges

* Update latest version
* Add supported versions

Author: rocky

README.rst

@@ -1,7 +1,7 @@
 Welcome to Mathics!
 ===================
 
-|Travis|_ |SlackStatus|_ |PyPI|_
+|Latest Version| |Supported Python Versions| |Travis|_ |SlackStatus|_
 
 Mathics is a general-purpose computer algebra system (CAS). It is an open-source alternative to Mathematica. It is free both as in "free beer" and as in "freedom".
 
@@ -32,18 +32,19 @@ Contributing
 
 Please feel encouraged to contribute to Mathics! Create your own fork, make the desired changes, commit, and make a pull request.
 
+
+License
+-------
+
+Mathics is released under the GNU General Public License Version 3 (GPL3).
+
 .. |SlackStatus| image:: https://mathics-slackin.herokuapp.com/badge.svg
 .. _SlackStatus: https://mathics-slackin.herokuapp.com/
 .. |Travis| image:: https://secure.travis-ci.org/mathics/Mathics.svg?branch=master
 .. _Travis: https://travis-ci.org/mathics/Mathics
-.. |PyPI| image:: https://img.shields.io/pypi/v/Mathics
 .. _PyPI: https://pypi.org/project/Mathics/
 .. |mathicsscript| image:: https://mathics.org/screenshots/mathicsscript.png
 .. |mathicssserver| image:: https://mathics.org/screenshots/mathicsserver.png
-
-
-
-License
--------
-
-Mathics is released under the GNU General Public License Version 3 (GPL3).
+.. |Latest Version| image:: https://badge.fury.io/py/Mathics3.svg
+		 :target: https://badge.fury.io/py/Mathics3
+.. |Supported Python Versions| image:: https://img.shields.io/pypi/pyversions/Mathics3.svg