feat(config): upgrade coffee-script to 1.6.3
feat(config): upgrade coffee-script to 1.6.3

karma-runner/karma-coffee-preprocessor,michael-brade/karma-livescript-preprocessor,looker/karma-coffee-preprocessor,jaen/karma-livescript-preprocessor,paolocarrasco/karma-coffee-preprocessor,kmees/karma-live-preprocessor,crabhi/karma-empty-css-preprocessor