Add env to readme and example

.env.example

@@ -1 +1,3 @@
-YTDLP_PATH=./yt-dlp
+YTDLP_PATH=./yt-dlp
+ORIGIN=http://example.com
+HOST=0.0.0.0

README.md

@@ -16,12 +16,14 @@ It's a svelte(kit) frontend that uses `yt-dlp` to let the user download things f
 2. Unpack and decompress (`tar xvf build.tar.gz`) the release
 3. Then `cd` into it and run: `npm ci` and `npm run build`
 4. Copy `.env.example` to `.env`, and add needed variables
-5. Run: `node build/`
+5. Run it: `node .`
+6. You can also try to configure the systemd unit file inside the `configurations` folder.
 
-### Docker (currently not supported)
+### Docker
 
+(currently not supported)
 
-### Development: getting started
+## Development: getting started
 
 - Clone the repo
 - Run `npm install` (you have to have node installed)