Changed several npm deps to use official versions (changes in them were merged)
Introduced `grunt server` devel workflow: jasmine at localhost:8888/spec
Added support for sauce labs
Updated CONTRIBUTING to reflect `grunt server`
Removed deprecated make script that is no longer used by travis
Fix specs to work on sauce-tested platforms
Merge pull request #537 from dc-js/devel-updates

Development toolchain updates + OpenSauce