update README.md install info

README.md

@@ -18,12 +18,13 @@ Want to be listed here? Add yourself in a pull-request!
 #### Try it out!
 You can see an up-to-date copy of the production branch running on https://minetrack.me
 
-"master" branch contains everything you need to start your own copy. "production" branch is what's used in the production environment of the minetrack.me site.
+"master" branch contains everything you need to start your own copy. "prod" and "prod-bedrock" branches are what is used in the production environment of the minetrack.me sites.
 
 #### Usage
 1. Make sure everything is correct in ```config.json```.
-2. Add/remove servers by editing the ```servers.json``` file.
-3. Run ```npm install```.
+2. Add/remove servers by editing the ```servers.json``` file
+3. Run ```npm install```
+4. Run ```npm run build``` (this bundles `assets/` into `dist/`)
 4. Run ```node app.js``` to boot the system (may need sudo!)
 
 (There's also ```install.sh``` and ```start.sh```, but they may not work for your OS.)