fix(jasminewd): display stack traces in correct order and with WebElement method failure details
docs(cli) Add Cucumber to the CLI help text
(fix): Convert test.sh to test.js

This would enable the tests to be run on both Linux and Windows.
fix(launcher): launcher should report a failure when only one capability is running
chore(tests): fixing typos with the new test.js script
test(clear): show that clear() now works and updates the model
Closes #301
(feature):Supporting promises for configs