An Adapt extension to switch between block backgrounds as the users scrolls the page
##Settings overview
Extends block data/model
####_backgroundSwitcher
Background Switcher block options object
####_backgroundSwitcher.src
This is the background image source used when page is viewed at desktop resolution
####_backgroundSwitcher.mobileSrc
This is the background image source used when page is viewed at mobile resolution
##Limitations
To Be Completed
##Browser spec
Tested on: - Chrome 34.0.1847.137, Safari 6.1.3 (7537.75.14) Firefox 28.0 Internet Explorer 8