docs(README): rearrange & add guide (#210)

Author: TWT233

README.md

@@ -6,19 +6,9 @@
 [![khl server](https://www.kaiheila.cn/api/v3/badge/guild?guild_id=7236941486257903&style=3)](https://kaihei.co/JJE0Es)
 ![github stars](https://img.shields.io/github/stars/TWT233/khl.py?style=social)
 
-Python SDK for [kaiheila.cn](https://www.kaiheila.cn/) API
+Python SDK for [kookapp.cn](https://www.kookapp.cn/)(aka [kaiheila.cn](https://www.kaiheila.cn/)) API
 
-# install
-
-Python requirement: >= Python 3.6
-
-```shell
-pip install khl.py
-```
-
-# quickly enroll
-
-Minimal example:
+# Minimal Example
 
 ```python
 from khl import Bot, Message
@@ -39,25 +29,26 @@ bot.run()
 # (remember to grant the bot with read & send permissions)
 ```
 
-For more example and tutorial, please turn to [example](./example)
+# INSTALL
 
-# FAQ
+requirement: Python >= 3.6.8
 
-when question encountered during using khl.py,
-please refer to [our wiki](https://github.com/TWT233/khl.py/wiki) for FAQ set
+```shell
+pip install khl.py
+```
+
+# Documentation
+
+- [Guide](https://khl-py.eu.org/) (authored by [musnows](https://github.com/musnows))
+- [Example](./example)
+- [Wiki](https://github.com/TWT233/khl.py/wiki) (archived FAQ)
 
 if your question has not been listed yet, please [create a issue](https://github.com/TWT233/khl.py/issues/new/choose)
 or [join our talk channel](https://kaihei.co/JJE0Es) for help
 
-# CONTRIBUTION
+# CONTRIBUTING
 
 welcome! we are glad to get help from community hands, and don't be shy to show your code,
 we can improve it together even if it's not perfect right now
 
 if there is any bug/perf/feature request, we are willing to deal with your issue/pull request!
-
-the only red tape:
-
-only accept commits satisfying [Conventional Commits convention](https://github.com/commitizen/cz-cli)
-
-search plugins with keyword `commitizen` for your editor/IDE, then addict to write commit message