hawk expects id address rather than localhost
include user id in browser payload - fixes #28
Merge pull request #36 from mozilla/28_send_userid

include user id in browser payload - fixes #28. Looks good. The Travis failure is Sauce-won't-load again.
update gherkin
updated README.md to include prereqs section
Merge pull request #42 from ckarlof/master

updated README.md to include prereqs section