Follow up from https://github.com/mavdi/grunt-cucumberjs/issues/11

New option SaveJson to keep a copy of the json output from cucumber run
That part is not needed anymore
Actually implement travis

https://travis-ci.org/mavdi/grunt-cucumberjs/builds
Fixing travis ci bad syntax paste
Passing travis build

Couldn't find any nodeunit or cudoc setup
Cleanup on package.json

No need to install nodeunit if we're not using it
Fixinig build error on tgravis

Apparently minimatch from grunt 0.4.1 is making travis sad
Merge pull request #12 from jrottenberg/issue_11

Ability to save json report as a dedicated file from a run