let's give folks the benefit of the doubt here
Pass options to a metric from the mailer
allow overriding better/title in the options hash
use `attr_reader`, not instance variable
Add options hash to lists
add options example for list
Merge pull request #77 from afeld/options-hash

Pass options to a metric from the mailer
Merge remote-tracking branch 'origin/master' into send-if-sunday

Conflicts:
	lib/tricle/aggregation.rb