[#17] Fixed the add a music to player

The activity version used startActicityForResult/onActivityResult
to treat get the music selected from list. With activity,
we used setTargetFragment/getTargetFragment to resolv this.

Some reference:
https://github.com/alexfu/TargetFragmentExample
http://stackoverflow.com/questions/13238959/how-to-get-button-clicks-in-host-fragment-from-dialog-fragment
Merge pull request #21 from adorilson/fix_issue_17_add_music_to_player

Fix issue 17 add music to player
Merge pull request #6 from rbonifacio/master

Merge with blessed