Rename package name to msgpack

Author: methane

setup.py

@@ -102,7 +102,7 @@ def __init__(self, *args, **kwargs):
     long_desc = f.read()
 del f
 
-setup(name='msgpack-python',
+setup(name='msgpack',
       author='INADA Naoki',
       author_email='songofacandy@gmail.com',
       version=version_str,
@@ -124,5 +124,5 @@ def __init__(self, *args, **kwargs):
           'Programming Language :: Python :: Implementation :: PyPy',
           'Intended Audience :: Developers',
           'License :: OSI Approved :: Apache Software License',
-          ]
-      )
+      ],
+)