Resolves #48 by adding example of banner role
Resolves #34 by providing an example of list and listitem roles
Resolves #33 adds math role examples using mathml and tex, right from ARIA spec
Resolves #25 by adding radiogroup role example
Resolves #23 adding a tree menu borrowed from Open Ajax Alliance
Resolves #9 adding a link role example
Resolves #56. Adds test of fieldset and legend
Resolves #31. Adds example of role=presentation on an image
Merge branch 'master' of https://github.com/Open-A11y-Testing/Test-Triage.git
Role region with aria-label to label the region.