First of all, thank you for releasing sourcekit-lsp. I've been playing with it and works well!
I have a question. I've already created an Emacs extension to communicate with the server. Do you want people to contribute editor integrations to the main repository or you prefer to keep them in their own package managers/repositories, external to the project? I ask because I see that the Visual Studio Code extension is part of the repository.
If not, I think that at least a link with documentation would be good, specially for people that approach the project for the first time. I can contribute that documentation once I publish my package on MELPA (https://melpa.org).