[LFTILI-110] adding a shortcut route to allow users to play next track
[LFTILI-111] returning current track url as part of the status function
[LFTILI-112] adding stream state information to the status output
Merge pull request #35 from loftili/LFTILI-110

[LFTILI-110], [LFTILI-111], [LFTILI-112]