RPCS3 Launcher\Updater

You're using the GitHub API to check if the build commit is the latest one / AppVeyor build system to see if the build number is the latest one on master? Then the application needs to ping whatever web server you're using.
Interested on how you've done that as I've attempted making a PHP system for checking builds and couldn't properly fetch stuff from GitHub.

I don't use API, I parse and copy the information using the simple PHP script on my server. API is too complicated for me)