Add readme.

README.rst

+Django stars widget
+===================
+
+Description
+-----------
+
+This is a simple widget rendering so-called rating stars as input for an
+integer field. It is based solely on CSS 3, as laid out by `Martin Ivanov
+<http://experiments.wemakesites.net/css3-rating-stars-with-selection.html>`_.
+
+Usage
+-----
+
+Just add the Stars widget to any IntegerField in a Django form.
+
+.. code:: python
+
+  from django import forms
+  from django_starfield import Stars
+
+  class StarsExampleForm(forms.Form):
+      rating = forms.IntegerField(widget=Stars())
+
+You can change the number of stars by passing the stars argument to the
+Stars widget.