update embed.js models and views
install Jasmine.js for javascript testing
add specs for ember models
Revert "setup for Heroku deployment"

This reverts commit 45805ca4ef579e9184306ba5e56f33f649a5ea1b.
update gems
requrie spec helpers in prefork
get rid of ember.js
Allow custom slugs for station
create serializer for observation
create embedded latest_observation for station
add online property to station
add station online/offline heuristics
create events for station up/down
Create notification class
create station mailer and views
implement eventing & notifications for station up/down events
Add station balance mailer
throttle station events
cleanup
cleanup
merge old-state