Make setup.py ready for release on PyPI

.gitignore

@@ -4,3 +4,6 @@
 .DS_Store
 /build
 __pycache__/
+MANIFEST
+dist/
+greenio.egg-info/

MANIFEST.in

@@ -0,0 +1 @@
+include MANIFEST.in LICENSE README

setup.py

@@ -1,9 +1,18 @@
-from distutils.core import setup
+from setuptools import setup
+
+
+extra = {}
+f = open('README', 'r')
+try:
+    extra['long_description'] = f.read()
+finally:
+    f.close()
 
 
 setup(
     name='greenio',
-    description="Greenlet based implementation of PEP 3156 event loop.",
+    version='0.5.0',
+    description="Greenlets for asyncio (PEP 3156).",
     url='https://github.com/1st1/greenio/',
     license='Apache 2.0',
     packages=['greenio'],