Add a readme for GitHub. This is just a stub; people who want to use the library should read the relevant blog post.
Add a readme for GitHub. This is just a stub; people who want to use the library should read the relevant blog post.

adigital/plugin-update-checker,adigital/plugin-update-checker,YahnisElsts/plugin-update-checker,YahnisElsts/plugin-update-checker