Modified dm-radio to use config file for storing radio stations

I know you just published an instructional video on this script, but I thought it might be more elegant and persistent to use the config file for storing radio stations. I've modified the dm-radio script to pull the stations list from the config file, using identical syntax to the channel list for dm-youtube.

I am aware that this makes the script significantly less portable, and I'm not sure if it's ideal to push such a major change so soon after the public announcement, so feel free to let this sit or reject outright.