use byebug instead of debugger
move development dependencies into gemfile
only use byebug on MRI 2.x
update gems

switch to rspec 3 syntax using transpec gem
Merge pull request #65 from afeld/byebug

use byebug instead of debugger
Merge remote-tracking branch 'origin/master' into update-gems

Conflicts:
	tricle.gemspec
more gem updates
specify rspec command to be run through guard
Merge pull request #66 from afeld/update-gems

update gems
Merge branch 'master' into lower-is-better

Conflicts:
	spec/unit/mailer_spec.rb
	spec/unit/test_metric_spec.rb