Updating description and adding long description (#124)

Author: aliabbasrizvi

MANIFEST.in

@@ -1,4 +1,5 @@
 include LICENSE
-include CHANGELOG
+include CHANGELOG.md
+include README.md
 include requirements/*
 recursive-exclude tests *

setup.py

@@ -17,10 +17,22 @@
   TEST_REQUIREMENTS = _file.read().splitlines()
   TEST_REQUIREMENTS = list(set(REQUIREMENTS + TEST_REQUIREMENTS))
 
+with open(os.path.join(here, 'README.md')) as _file:
+  README = _file.read()
+
+with open(os.path.join(here, 'CHANGELOG.md')) as _file:
+  CHANGELOG = _file.read()
+
+about_text = 'Optimizely X Full Stack is A/B testing and feature management for product development teams. ' \
+             'Experiment in any application. Make every feature on your roadmap an opportunity to learn. ' \
+             'Learn more at https://www.optimizely.com/products/full-stack/ or see our documentation at ' \
+             'https://developers.optimizely.com/x/solutions/sdks/reference/index.html?language=python.'
+
 setup(
     name='optimizely-sdk',
     version=__version__,
-    description="SDK for Optimizely's Full Stack Python project.",
+    description='Python SDK for Optimizely X Full Stack.',
+    long_description=about_text + '\n\n# Readme: \n' + README + '\n\n# Change Log: \n' + CHANGELOG,
     author='Optimizely',
     author_email='developers@optimizely.com',
     url='https://github.com/optimizely/python-sdk',