switch to gulp deps
add more deps
add gulpfile
remove gruntfile
update travis to use gulp
add underscore as dep
Merge pull request #6 from cs198/gulp

Gulp
add mock Api class for testing
add scaffolding, skeleton for HelperQueue
implement active helpers pane
implement help requests pane
implement queue status pane
Reduce refresh timeout to 5000
add click handler to queue status toggle
add num requests message, split into list items
add state to API to simulate requests
refactor requests, refresh only in parent affect state in child
modify toggleEnabled to update