Update description

Author: xoolive

setup.py

@@ -106,7 +106,7 @@ def run(self):
       version="1.2",
       author="Xavier Olive",
       author_email="[email protected]",
-      description="Wrapping for OCaml Facile library for Python",
+      description="Python constraint programming library",
       long_description=get_long_description(),
       license="LGPL 3.0",
       url="https://github.com/xoolive/facile",