query - added focus-groups as non-selectable
manager - added check if el is defined
highlighter - show and hide based on selection
keyboard - added watchNextKeyUp to keyboard in order to better handle when focus is lost in the browser completely during key navigation
group - handler for when focus is lost beyond the document during key navigation
manager - break out event regardless of element passed in
element - added check if element is visible
query - exposed isVisible into api
added how-to.html file
build 0.2.2
Update to examples
highlight - added delay to highlight
build 0.2.2