updated ad
cleanup and readme edits
Update README.md
Merge pull request #674 from MartijnR/master

cleanup and readme edits
upgraded XSLT sheets with fix for #276 (both form="long" and form="short" versions of labels)
upgraded enketo-core with widget instantiation fix for cloned repeats
Merge pull request #675 from MartijnR/master

fix for widgets in cloned repeats
Merge pull request #676 from SEL-Columbia/master

cleanup and fix for widgets inside repeats