Add reference to python 3.8 and 3.9 support

Author: pitbulk

.travis.yml

@@ -4,6 +4,8 @@ python:
   - '3.5'
   - '3.6'
   - '3.7'
+  - '3.8'
+  - '3.9'
 
 matrix:
   include:

setup.py

@@ -21,6 +21,8 @@
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
+	'Programming Language :: Python :: 3.8',
+	'Programming Language :: Python :: 3.9',
     ],
     author='OneLogin',
     author_email='support@onelogin.com',