文档亟待丰富

[bieao411327]

• [ ] I have searched the issues of this repository and believe that this is not a duplicate.

What problem does this feature solve?

目前的文档对新手使用很不友好，无法准确快速的上手

What does the proposed API look like?

详细的介绍每个api的使用方式以及对应的demo

[duud666]

就是个kpi产物，难用的一比，bug一堆。各版本交互还不一致。绝了，提issure还没人回，黄了得了