Normalize package name to lower-case in setup.py (#1110)

Fixes #1109.

Author: akx

setup.py

@@ -25,7 +25,7 @@ def run(self):
 
 
 setup(
-    name='Babel',
+    name='babel',
     version=__version__,
     description='Internationalization utilities',
     long_description='A collection of tools for internationalizing Python applications.',