Chinese Docs

[fantix]

Translations are supposed to be done on Transifex, and the built docs can be found here: https://python-gino.org/docs/zh/master/index.html

Automated build is already set, only translation to go!

• [x] index (fantix)
• [x] tutorial (fantix)
• [ ] schema
• [ ] engine
• [ ] transaction
• [ ] crud
• [ ] relationship

API docs:

• [ ] api.py
• [ ] engine.py
• [ ] crud.py
• [ ] declarative.py
• [ ] dialects/asyncpg.py
• [ ] json_support.py
• [ ] strategies.py
• [ ] schema.py
• [ ] transaction.py