updating rst format for long description - drop python 2.7

Author: superdiana

setup.py

@@ -42,10 +42,10 @@ def find_version(*file_paths):
     name = 'opentok',
     version = find_version('opentok', 'version.py'),
     description = 'OpenTok server-side SDK',
+    long_description_content_type='text/x-rst',
+    url='https://github.com/opentok/Opentok-Python-SDK/',
     long_description=long_description,
 
-    url = 'https://github.com/opentok/Opentok-Python-SDK',
-
     author='TokBox, Inc.',
     author_email='support@tokbox.com',
     license='LICENSE.txt',
@@ -58,9 +58,6 @@ def find_version(*file_paths):
 
         'License :: OSI Approved :: MIT License',
 
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.6',
-        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',