Merge pull request #66 from mstuart/update-deps

Update to chalk 0.4.0
Merge pull request #64 from mstuart/fix-deprecated-assertions

Fix tests to not use deprecated yeoman functions.
Merge pull request #58 from mstuart/yo-kraken-help

Add more details for 'yo kraken --help'
kraken:controller invokes model, template, and content bundle subgenerators.
kraken:template invokes locale subgenerator.