Merge pull request #45 from satyam-seth-learnings/setup-black

Add black official doc

Author: satyam-seth

README.md

@@ -224,8 +224,10 @@
   force-exclude = "/migrations/"
   ```
 
+- Note:- black official [doc](https://black.readthedocs.io/en/stable/getting_started.html)
+
 - Fix formatting using black
 
   ```sh
   black .
-  ```
+  ```