Fix URL

Author: jdemeyer

README.rst

@@ -45,7 +45,7 @@ If you want to try the development version use
 
 ::
 
-    $ pip install git+https://github.com/defeo/cypari2.git [--user]
+    $ pip install git+https://github.com/sagemath/cypari2.git [--user]
 
 If you have an error saying libpari-gmp*.so* is missing and have all requirements
 already installed, try to reinstall cysignals and cypari2

setup.py

@@ -72,7 +72,7 @@ def run(self):
     install_requires=['cysignals>=1.7'],
     description="A Python interface to the number theory library PARI/GP",
     long_description=README,
-    url='https://github.com/defeo/cypari2',
+    url="https://github.com/sagemath/cypari2",
     author="Luca De Feo, Vincent Delecroix, Jeroen Demeyer, Vincent Klein",
     author_email="[email protected]",
     license='GNU General Public License, version 2 or later',