Implemented streamStatus

Implementation is not complete. fps, audio and video paramters are not
implemented. isSeekable and isPlaybackSpeedChangeable returns false for
now since seek and playbackSpeed aren't implemented in the player yet.
Implemented fps value
Added null values if stream is not available
Implemented audio and video values
Code formatting

Updated formatting to comply with guidelines.
streamHasAudio and streamHasVideo

The values of streamHasAudio and streamHasVideo now persists true
values.
Reset audio and video status

Added reset of stream audio and video status in case play is run without
stopping a previously running stream first.
Changed case of currentState values

Changed all currentState values to be all lower case.
resolution return value

Changed the resolution return value from streamStatus function to return
an object.
Updated resolution description

Updated resolution return value description.
Moved reset of audio and video status
Merge pull request #30 from LingoLasse/streamstatus

Player: StreamStatus