add travis build status, fixes #139
update to intern 1.6, fixes #140, #141
Revert "keys to run against travis regression against ibm-js saucelabs account"

This reverts commit b3e16f597c18f71593f4ed1ca467ac29c360423e.

The current config gets an error about the saucelabs user/password being undefined, and
according to Lee the old config file already ran against ibm-js saucelabs account.