Merge pull request #122 from ekohl/patch-1

Add link to documentation to README
diff --git a/README.rst b/README.rst
index de9aa4e..5b9f507 100644
--- a/README.rst
+++ b/README.rst
@@ -4,7 +4,9 @@
 
 See the file INSTALL for installation instructions.
 
-See http://github.com/pyca/pyopenssl for development.
+See https://github.com/pyca/pyopenssl for development.
+
+See https://pyopenssl.readthedocs.org for documentation.
 
 See https://mail.python.org/mailman/listinfo/pyopenssl-users for the discussion mailing list.