Consider add documentation?

[HuangFuSL]

Hi! I'm collecting aoe2 ranked game records and using this library to parse them. However when I want to extract specified data from records, I'm getting lost in APIs and sometimes I have to refer to the source code to make sure which method to use. I'm wondering if it would be possible to add a documentation site or just a markdown page containing a quick reference of what we can inspect using this module and corresponding APIs in detail?

[M1ngXU]

the main docs are in the readme/code 11, but yeah, some doc strings would be great