update test pages to work w/ new button
Merge pull request #54 from mlippert/widget-refactor

update test pages to work w/ new button
Merge pull request #55 from seannives/seann

Seann
beginnings of nested widgets and NeffReactor stub
Callouts as a module.  d3 as a requirejs shim.
Merge remote-tracking branch 'upstream/master' into seann