Adds global hotkeys support for Grooveshark
Based on the work from Julian Xhokaxhiu (https://github.com/julianxhokaxhiu/chrome-grooveshark-mediakeys-reloaded)
HOW IT WORKS:
Just press play/pause, prev or next buttons and it will trigger the corresponding buttons for the webpage.
There are also some predefined hot-keys to Favorite and Like songs:
Ctrl+Shift+7 -> Remove from Favorites
Ctrl+Shift+8 -> Remove from Collection
Ctrl+Shift+9 -> Add to Favorites
Ctrl+Shift+0 -> Add to Collection
Hotkeys also work when chrome is in background.
To change these hotkeys go to chrome://extensions/ and click Keyboard Shortcuts on the bottom right corner.