Initialize Travis
Merge pull request #71 from csrwng/travis_yml

Initialize Travis
Standalone STI
Add Godeps
Addressed review comments. Added doc.go to packages
Fix Dan's name/email
Re-add integration tests
Fixes suggested by soltysh
Fix integration test cleanup and add script to build test images
Separate out STIRequest and STIResult into their own file. Update UsageHandler interface.
Fix integration test images - comments and scripts URL