Fixing formatting of description (#131)

Author: aliabbasrizvi

setup.py

@@ -33,6 +33,7 @@
     version=__version__,
     description='Python SDK for Optimizely X Full Stack.',
     long_description=about_text + '\n\n# Readme: \n' + README + '\n\n# Change Log: \n' + CHANGELOG,
+    long_description_content_type='text/markdown',
     author='Optimizely',
     author_email='[email protected]',
     url='https://github.com/optimizely/python-sdk',