switch to the new travis dart configuration

update the version of usage that we depend on

0.1.5+2

Add web tests

Test that project generation can work from a dart:html environment.

add gitignore to appengineapp and cleanup

move stagehand over to using the usage GA library

Tweak CHANGELOG.md

sort file listings

--version checks latest version

first cut at an uber simple web app

Add appengineapp description