Shell command to run node-webkit on Windows platforms.
Added volume control.
add "How does it work?" to readme
if users click on cancel, the name of playlist would be null
Merge pull request #46 from EragonJ/bug/fix-rename-playlist

When renaming playlist, if users click on `cancel`, the name of playlist would be null
update JS/CSS vendor libs
update github screenshot
Merge pull request #25 from liamja/volume

Added a simple volume control.
update volume slider design
update to 0.4.6