Added a naive fix to enable scrolling when the list is too short
Merge branch 'scrollfix_for_short_list' of https://github.com/sunkencity/android-pulltorefresh into scrollfix_for_short_list
Use the total heights of list items when calculating the footer height.
Removed the TAP_TO_REFRESH state.
Refactoring to be get rid of tap to refresh.
Updated example project.
Added all robots.
Fix bug with missing layout.
Change name of GetDataTask to GetRobotTalkTask.
Improving behavior when there is a null adapter and behavior when list items are variable height
Adding in a listener for end of list reached. This trigger can be used to load more data when a user scrolls to the bottom of a list.
Merge branch 'scrollfix_for_short_list' of github.com:jasonsutor/android-pulltorefresh into jasonsutor

Conflicts:
	pulltorefresh/default.properties
	pulltorefresh/project.properties
	pulltorefresh/src/com/markupartist/android/widget/PullToRefreshListView.java
added animated pullback