Add onScrollListener

[AlexeyFreelancer]

Hi @felipecsl
I like your QuickReturn, but I can not add my own scroll listener:

mList.setOnScrollListener(new EndlessScrollListener() {...});

As I see you're changed onScrollListener in the constructor QuickReturnAttacher

listView.setOnScrollListener(this);

Could you implement Composite pattern here?
http://en.wikipedia.org/wiki/Composite_pattern
http://stackoverflow.com/questions/5465204/how-can-i-set-up-multiple-listeners-for-one-event

[felipecsl]

@AlexeyFreelancer will do, this was on my todo list, expect a new release later today!

[felipecsl]

Fix released in version 1.2.0-SNAPSHOT.
@AlexeyFreelancer thanks for reporting!