Add link to docs: https://python-gnupg.readthedocs.org/en/latest/

setup.py

@@ -54,7 +54,12 @@ signature functionality from Python programs, by interacting with GnuPG \
 through file descriptors. Input arguments are strictly checked and sanitised, \
 and therefore this module should be safe to use in networked applications \
 requiring direct user input. It is intended for use with Python 2.6 or \
-greater.""",
+greater.
+
+Documentation can be found on readthedocs_.
+
+.. _readthedocs: https://python-gnupg.readthedocs.org/en/latest/
+""",
     license="AGPLv3",
 
     version=versioneer.get_version(),