Explain how to install ralph-lsp

README.md

@@ -22,6 +22,24 @@ Ralph is the language used in alephium to write smart contracts.
   - ...
 - Linting. ✅
 
+## Install ralph-lsp
+
+Download `ralph-lsp-x.x.x.zip` from [the latest release page](https://github.com/alephium/ralph-lsp/releases/latest).
+Unzip and add the `bin` directory to your `PATH`.
+You might need to [start vscode from the terminal](https://code.visualstudio.com/docs/supporting/faq#_resolving-shell-environment-fails), so it can pick up the `PATH` environment variable.
+
+## Build the extension
+
+```bash
+npm install
+npm run compile
+vsce package
+```
+
+## Install the extension
+
+Go to vscode extensions and click on the three dots on the top right corner and select `Install from VSIX...` and select the generated `.vsix` file.
+
 ## Extension Settings
 
 ### Configuration