Update setup()

Author: methane

setup.py

@@ -120,7 +120,13 @@ def __init__(self, *args, **kwargs):
       packages=['msgpack'],
       description=desc,
       long_description=long_desc,
-      url='http://msgpack.org/',
+      long_description_content_type="text/x-rst",
+      url='https://msgpack.org/',
+      project_urls = {
+          'Documentation': 'https://msgpack-python.readthedocs.io/',
+          'Source': 'https://github.com/msgpack/msgpack-python',
+          'Tracker': 'https://github.com/msgpack/msgpack-python/issues',
+      },
       license='Apache 2.0',
       classifiers=[
           'Programming Language :: Python :: 2',