add emailer class
refactor alert class to use new emailer class
add generic event class and asg notification event class
add basic event classifier
update alert class to use event classifier
add basic cloud watch alarm event type
add unknown event type
update README
clean up some specs
tweak README
tweak README
tweak README
tweak README
tweak README
return an unknown even as appropriate
tweak unknown event body
tweak grammar of event body
Merge pull request #5 from intuit/cloudwatch_alarms

Add basic support for cloudwatch alarms