convert to rspec 3.0 syntax and some minor adjustments
more fully stub get inventory request
refactor #get_inventory test
refactor #get_inventory test
adds helpers for specs
removes soap spec
adds dummy xml for Response xml builders
completes and passes client specs
completes and passes country specs
completes and passes inventory specs
completes and passes order specs
completes and passes request specs
completes and passes response specs
completes and passes shipping specs
completes and passes tracking specs
Merge pull request #1 from JONBRWN/feature/update-specs

Feature/update specs
finalize test suite
update travis.yml to report to travis-ci
bump version to 0.0.3 for release
update badges in readme