Clarify lang-server support

Author: chenglou

CONTRIBUTING.md

@@ -2,10 +2,6 @@
 
 Thanks for your interest. Below is an informal spec of how the plugin's server communicates with the actual compiler. If you're a ReScript editor plugin implementor, you should probably read this to understand the various important nuances and copy it.
 
-## Other Editors With Language-Server Support
-
-This repo happens to also contain a language-server usable by other editors. If you'd like to use this language-server with e.g. Atom, for now, you have to clone the repo and run `npm run compile`. The language server will be at `server/out/server.js`. Wire that into your editor.
-
 ## Repo Structure
 
 ```

README.md

@@ -48,7 +48,11 @@ The plugin activates on `.res` and `.resi` files. If you've already got Reason-L
   - `try`, `for`, etc.
 - Folding, and [custom folding](https://code.visualstudio.com/docs/editor/codebasics#_folding) through `//#region` and `//#endregion`.
 
-### Upcoming Features
+## Use with Other Editors
 
-- Formatting of temporary files
-- Formatting of files outside of a ReScript project root
+This repo also contains a language server that can power other editors. **However, the language server in this project is a pure implementation detail. We don't guarantee its stability for other editors' consumption** apart from Vim and Sublime Text.
+
+Still, if you'd like to use this language-server with other editors:
+- Get the release binaries from the Github Releases page.
+- Unzip the `.vsix` and get the `server` folder. That's the only folder you need.
+- The language server will be at `server/out/server.js`. Call it through node, and optionally pass `--stdio` if your editor doesn't support the default JSONRPC.