Merge pull request #27 from radzinzki/master

Fixing a typo in the readme (wrong variable name).
Merge pull request #28 from radzinzki/master

Adding phone code support.
Updating to resources in twitter-cldr-rb 2.4.3 (en-GB abbreviated timespan fix), fixing list formatter when lists contain fewer than 2 elements, bumping version and history
Adding ruby 2.0 and 2.1 to travis.yml