Fix package URL to use https (#659)

Author: mschoettle

setup.py

@@ -19,7 +19,7 @@
     version=about['__version__'],
     author='iMerica',
     author_email='imichael@pm.me',
-    url='http://github.com/iMerica/dj-rest-auth',
+    url='https://github.com/iMerica/dj-rest-auth',
     description='Authentication and Registration in Django Rest Framework',
     license='MIT',
     packages=find_packages(),