Additions

[nobre84]

Hi! This is a good component, thanks for sharing! I needed some tweaks and fixes for my use case, and hope it might be useful for the library or anyone using it:

• Doesn't require FB on the Demo - only request authorization in the FB tab • Uncoupled Items based on a protocol instead of requiring a strict item class (allow for showing arbitrary model objects directly, either by implementing the protocol in your class or in a category) • Delegate block helper if one wants to move away from delegation pattern • Some typos & warnings fixed