Merge pull request #3 from honest/avatax

Avatax
Didn't end up using time cop
Add rakefile stuff for travis
Add .ruby-version file
Bump version
rename .travis.yml
Fix a flaky invalid address spec
Add vcr and cassettes, making sure to filter out credentials
Dynamic dates + vcr cause specs to fail
Merge pull request #4 from honest/fix_flaky_spec

Fix a flaky invalid address spec
Merge pull request #5 from honest/add_vcr

Add vcr
bump version
use a real shipping tax code and ship to santa monica; recreate all cassettes
WWW-2869 - added in a configurable timeout for rest request.
WWW-2869 - reved the gemspec version.
Merge pull request #6 from honest/WWW-2869

WWW-2869 - added in a configurable timeout for rest request.