Merge pull request #42 from Soundnode/develop

Fix open links "download/permalink" on default browser
Update development section
player working in progress
style update
add fix to favorites and tracks view. Also add some updates to player
Give order importance on the development intro
code refactoring on retrieve data from SC. Add Service to handle all the logic and remove this job from the controller
work progress on player
major/important player feature improvement and code refactoring. Also adds partial style for player.
Merge pull request #44 from Soundnode/player-working-progress

Major improvements on Player feature
add player progress bar and time left
Merge pull request #45 from Soundnode/player-progress

add player progress bar and time left
update Soundnode App screenshot