Link to Github / Documentation

I really think this needs a link to the great documentation on GitHub. I couldn’t find it anywhere on the plugin pages.

For those who don’t know this is WP-API, they may nit know where to find the docs. And with the JSON-API plugin having 10x more downloads and docs on the plugin page, that might cause others to choose the other plugin over this one

https://ww.wp.xz.cn/plugins/json-rest-api/