Add sponsor.

lepture · lepture · commit 73a120c716f1 · 2018-05-08T15:07:59.000+09:00
diff --git a/README.md b/README.md
@@ -7,6 +7,15 @@ If you are looking for old Flask-OAuthlib implementation, check the
 - Documentation: <https://docs.authlib.org/en/latest/flask/oauth2.html>
 - Authlib Repo: <https://github.com/lepture/authlib>
 
+## Sponsors
+
+<table>
+  <tr>
+    <td><img align="middle" width="48" src="https://user-images.githubusercontent.com/290496/39297078-89d00928-497d-11e8-8119-0c53afe14cd0.png"></td>
+    <td>If you want to quickly add secure token-based authentication to Python projects, feel free to check Auth0's Python SDK and free plan at <a href="https://auth0.com/overview?utm_source=GHsponsor&utm_medium=GHsponsor&utm_campaign=authlib&utm_content=auth">auth0.com/overview</a>.</td>
+  </tr>
+</table>
+
 ## Take a quick look
 
 This is a ready to run example, let's take a quick experience at first. To
