fix: revert setup.py changes

Author: mariodev

setup.py

@@ -28,8 +28,8 @@
     keywords='django rest auth registration rest-framework django-registration api',
     zip_safe=False,
     install_requires=[
-        'Django==1.8.0',
-        'djangorestframework==3.1.3',
+        'Django>=1.8.0',
+        'djangorestframework>=3.1.3',
         'six>=1.9.0',
     ],
     extras_require={