updated readme with radio station config instructions

readme.md

@@ -1,6 +1,6 @@
 # spotifyRadioPlaylist
 
-Putting the latest tracks from [FM4](http://fm4.orf.at) onto a spotify playlist. 
+Putting the latest tracks from a radio station with online trackservice (like [this one](http://fm4.orf.at/trackservicepopup/main)) onto a spotify playlist.
 
 ## Demo
 
@@ -11,18 +11,20 @@ Currently running every 20min via cronjob on [this playlist](https://play.spotif
 Before running it on the server you need to authenticate via oAuth (as the user who owns the specified playlist) locally.
 
 1. Clone this repo into a local directory
-2. Copy `config.example.json` to `config.json` and insert your own credentials. 
+2. Copy `config.example.json` to `config.json` and insert your own credentials & radio station.
 You can obtain a clientId & clientSecret by [registering a new application](https://developer.spotify.com/my-applications/#!/applications).
+You can use the predefined radio settings for [Radio FM4](http://fm4.orf.at) or define settings for your own radio station. You need a URL to a page that lists the recently played tracks and a jQuery style selector for title and artist. I added a flag for FM4s weird HTML markup - this should be set to false for others.
+I have tested only [one other radio station](http://www.novaplanet.com/radionova), so this may require some adjustments in the code for other stations.
 3. Run `npm install`
 4. Run `node main.js`
 5. Open the displayed URL in your browser & grant permission for your app to change your playlists. This will open a page on localhost which you can close. Now you find two new files: `accessToken` and `refreshToken`. They contain the secret information to authenticate the user with spotify, so handle with care!
 
-This should have added the first tracks to your playlist already. Every time you run `node main.js` again, the script will check if there are [new tracks](http://fm4.orf.at/trackservicepopup/main) that have not been added to the playlist yet.
+This should have added the first tracks to your playlist already. Every time you run `node main.js` again, the script will check if there are new tracks that have not been added to the playlist yet.
 
-You may want to run this on a server via cronjob every 20min or so.
+You may want to run this on a server via cronjob every X minutes or so (depending on how many results your trackservice delivers in one page).
 
 1. Clone this repo on your server into a _non-public_ directory
 2. Copy your local `accessToken` and `refreshToken` onto the server
 3. Copy your local `config.json` onto the server and change the last entry to `"localEnvironment": false`
 4. Run `npm install`
-5. Configure your cronjob to run `node main.js` every 20min (don't forget to change to the correct directory first!)
+5. Configure your cronjob to run `node main.js` every X minutes (don't forget to change to the correct directory first!)