created seed file for the user and playlists
added add route to link track_id to playlist_id inside track playlist
added to seed file to create Tracks. added new attribute to Tracks called order to show the order of the track inside the playlist. got rid of join table and created one to many relationship between Tracks and Playlist
playlist show page displays tracks in order and title name and url
fixed a bug that was breaking the page whenever track was added to empty playlist
added update route which updates the title and the track order after forms in edit route has been filled
Merge pull request #5 from kevinkang88/PLAYLISTS_PAGES

Playlists pages