Update docs/README.md

Author: SonicStark

docs/README.md

@@ -62,6 +62,8 @@ It introduces how our **MI** is built based on the previous **CLI** and its appl
 
 | Item | Description |
 |------|-------------|
-| workflow.drawio     | It is drawn with [jgraph/drawio](https://github.com/jgraph/drawio) and shows how we maintain this project. |
-| workflow.drawio.png | Rendered from `workflow.drawio` for using in `python-bugzilla-mi/README.md`. |
-|demo_frontend.py|...|
+| workflow.drawio      | It is drawn with [jgraph/drawio](https://github.com/jgraph/drawio) and shows how we maintain this project. |
+| workflow.drawio.png  | Rendered from `workflow.drawio` for using in `python-bugzilla-mi/README.md`. |
+| demo_frontend.py     | A demo frontend based on [pexpect](https://github.com/pexpect/pexpect) that shows how to automate our *MI*. |
+| demo_frontend.stdout | Things printed during running `demo_frontend.py`. |
+| demo_frontend.logger | Log generated by *MI* during running `demo_frontend.py`. |