torlauncher has no readme file
https://gitweb.torproject.org/tor-launcher.git/tree/ doesn't give me any place to start in terms of building or using the extension.
It would probably be helpful to teach people at least these few things:
Tor launcher is intended only for use in Tor Browser, not for putting in your own Firefox. (But also it's supported for use in Tor Messenger, and maybe others?)
Here's what you need to do to make your own xpi, e.g. if you've changed the translations and you want to rebuild it for testing.
Some pointer to the Tor Browser build docs, so people can learn where Tor Launcher fits into the bigger picture.
And maybe more?