Update example-widget-header-titles.html

A plugin was used in the example that is not part of tablesorter so added it to the notes
Merge pull request #642 from lordmat0/patch-1

Update example-widget-header-titles.html
Scroller: Set column widths are now maintained. Fixes #634 & #380
Scroller: behaves properly with overflow scroll & column alignment. Fixes #340 & #333
Scroller: change default scroll bar width to 18. Fixes #363
Theme: remove auto height setting from filter elements
version bump
Merge branch 'working'