Make discord.ext a namespace package.

setup.py

@@ -29,7 +29,7 @@ setup(name='discord.py',
       author='Rapptz',
       url='https://github.com/Rapptz/discord.py',
       version=version,
-      packages=find_packages(),
+      packages=['discord', 'discord.ext.commands'],
       license='MIT',
       description='A python wrapper for the Discord API',
       long_description=readme,
@@ -44,6 +44,7 @@ setup(name='discord.py',
         'Operating System :: OS Independent',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
         'Topic :: Internet',
         'Topic :: Software Development :: Libraries',
         'Topic :: Software Development :: Libraries :: Python Modules',