docs: Update README with detailed setup and build instructions

README.md

@@ -5,7 +5,25 @@ The official library for the LfK [backend server](https://git.odit.services/lfk/
 Automagicly™ generated by [openapi-typescript-codegen](https://www.npmjs.com/package/openapi-typescript-codegen)
 
 ## 🛠 Building
-Get's automagicly™ build by drone for every new backend release.
+
+### Setup ⬇️
+
+```bash
+git clone https://git.odit.services/lfk/lfk-client-js.git
+cd lfk-client-js
+pnpm i
+```
+
+### Build 🔨
+
+```bash
+pnpm update:openapi # Update the openapi.json file
+pnpm build # Build the project
+pnpm release # Bump and release to npm
+
+# Or just do it all in one command
+pnpm update
+```
 
 ## Use