Add README to setup long_description

Author: daffidwilde

setup.py

@@ -2,10 +2,14 @@
 
 from setuptools import setup
 
+with open('README.rst', 'r') as readme_file:
+    readme = readme_file.read()
+
 setup(
     name='matching',
     version='0.1',
     description='A package for solving matching games',
+    long_description=readme,
     url='https://github.com/daffidwilde/matching',
     author='Henry Wilde',
     author_email='[email protected]',