Added DeepWiki to README (#82)

Author: Nusnus

.gitignore

@@ -26,3 +26,5 @@ celery/tests/cover/
 cover/
 .vagrant/
 *.sqlite3
+.python-version
+.env

README.rst

@@ -5,8 +5,14 @@
 :Version: 2.1.3
 :Download: http://pypi.python.org/pypi/sphinx_celery/
 :Source: http://github.com/celery/sphinx_celery/
+:DeepWiki: |deepwiki|
 :Keywords: Sphinx, documentation, python
 
+.. |deepwiki| image:: https://devin.ai/assets/deepwiki-badge.png
+    :alt: Ask http://DeepWiki.com
+    :target: https://deepwiki.com/celery/sphinx_celery
+    :width: 125px
+
 About
 =====