Add metadata for new pypi.org

Author: willingc

setup.py

@@ -60,22 +60,35 @@ def run(self):
     name            = name,
     version         = version_ns['__version__'],
     packages        = packages,
-    description     = "Jupyter protocol implementation and client libraries",
+    description     = 'Jupyter protocol implementation and client libraries',
     author          = 'Jupyter Development Team',
     author_email    = '[email protected]',
     url             = 'https://jupyter.org',
     license         = 'BSD',
     platforms       = "Linux, Mac OS X, Windows",
     keywords        = ['Interactive', 'Interpreter', 'Shell', 'Web'],
+    project_urls    = {
+        'Documentation': 'https://jupyter-client.readthedocs.io',
+        'Source': 'https://github.com/jupyter/jupyter_client/',
+        'Tracker': 'https://github.com/jupyter/jupyter_client/issues',
+    },
     classifiers     = [
+        'Framework :: Jupyter',
         'Intended Audience :: Developers',
+        'Intended Audience :: Education',
         'Intended Audience :: System Administrators',
         'Intended Audience :: Science/Research',
         'License :: OSI Approved :: BSD License',
+        'Operating System :: MacOS',
+        'Operating System :: Microsoft :: Windows',
+        'Operating System :: POSIX :: Linux',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.3',
+        'Programming Language :: Python :: 3.4',
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
     ],
     install_requires = [
         'traitlets',
@@ -85,6 +98,7 @@ def run(self):
         'entrypoints',
         'tornado>=4.1',
     ],
+    python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, <4',
     extras_require   = {
         'test': ['ipykernel', 'ipython', 'mock'],
         'test:python_version == "3.3"': ['pytest<3.3.0'],