add debugger to gemspec
add tests for the tests
fix for ruby 1.9.3: dont use Range#size
load test data by dates, and fix the time used for the TestMetric
use rspec as default rake task
add travis config
attempt to fix require problem for ruby 1.9.3 on travis

https://travis-ci.org/artsy/tricle/jobs/9967512
ensure the files are always require'd in a certain order
add extensions to require_relative calls
Merge remote-tracking branch 'upstream/master' into ruby-1.9.3
fix require path for email_helper
Merge pull request #24 from afeld/ruby-1.9.3

@joeyAghion => fix specs and run on Travis