Update README.md
fix crash when invoke notifyDataSetChanged() while scrolling
Moved header into frame
Merge pull request #67 from sheimi/fix-wrapper

fix crash when invoke notifyDataSetChanged() while scrolling
removed old code
Merge branch 'master' into development

Conflicts:
	library/src/com/emilsjolander/components/stickylistheaders/StickyListHeadersListView.java
headers divider and items are now all separate list items. Positions are mapped to their logically correct position.