Updating badges to pull from shields.io

badges/pypipins#39

README.rst

@@ -10,22 +10,14 @@ django-versatileimagefield
     :target: https://coveralls.io/r/WGBH/django-versatileimagefield
     :alt: Coverage Status
 
-.. image:: https://pypip.in/py_versions/django-versatileimagefield/badge.svg?style=flat
-    :target: https://pypi.python.org/pypi/django-versatileimagefield/
-    :alt: Supported Python versions
-
-.. image:: https://pypip.in/download/django-versatileimagefield/badge.svg?style=flat
+.. image:: https://img.shields.io/pypi/dm/django-versatileimagefield.svg?style=flat
     :target: https://pypi.python.org/pypi/django-versatileimagefield/
     :alt: Downloads
 
-.. image:: https://pypip.in/version/django-versatileimagefield/badge.svg?style=flat
+.. image:: https://img.shields.io/pypi/v/django-versatileimagefield.svg?style=flat
     :target: https://pypi.python.org/pypi/django-versatileimagefield/
     :alt: Latest Version
 
-.. image:: https://pypip.in/wheel/django-versatileimagefield/badge.svg
-    :target: https://pypi.python.org/pypi/django-versatileimagefield/
-    :alt: Wheel Status
-
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 A drop-in replacement for django's ``ImageField`` that provides a flexible, intuitive and easily-extensible interface for creating new images from the one assigned to the field.