python_requires gt 2.7

Author: iliakur

setup.py

@@ -43,7 +43,7 @@ def readall(path):
     author_email="[email protected]",
     url="https://github.com/requests/requests-oauthlib",
     packages=["requests_oauthlib", "requests_oauthlib.compliance_fixes"],
-    python_requires="!=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*",
+    python_requires=">2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*",
     install_requires=["oauthlib>=3.0.0", "requests>=2.0.0"],
     extras_require={"rsa": ["oauthlib[signedtoken]>=3.0.0"]},
     license="ISC",