Merge pull request #83 from zolkis/gh-pages

added event handler tables, added returning Future
Renamed Future to Promises (closes #84)
Added definition of Promise.
Fixed some issues with the markup.
Merge pull request #85 from marcoscaceres/promises

Promises
Merge remote-tracking branch 'upstream/gh-pages' into markup_issues
Fixed up markup issues (valid HTML5 now)
tidy
Merge pull request #86 from marcoscaceres/markup_issues

Markup issues
fixed startTone description, solves #88)