Add source to undefined step result
Remove global underscore
Remove global driver
Remove global $
Remove global argv
Remove globals doc all together
Merge pull request #152 from joshtombs/jt/add-to-format

More detailed undefined step summary
Shorthand Widget with @W
Refactor pioneer to accept option hashes
Merge remote-tracking branch 'origin/pr/153' into v0.8.0
Add selector to widget class operations