Add long description

Author: acoburn

setup.py

@@ -25,10 +25,14 @@ def run_tests(self):
         sys.exit(errno)
 
 
+with open('README.rst', 'r') as f:
+    readme = f.read()
+
 setup(name='py-ldnlib',
       version='0.1.1',
       description='Python-based linked data notification libraries',
       long_description=readme,
+      long_description_content_type="text/x-rst",
       author='Aaron Coburn',
       author_email='acoburn@amherst.edu',
       maintainer='Aaron Coburn',