chore(package): fix for jspm 0.17
chore(package): fix for jspm 0.17

genadis/aurelia-mdl,matthewca/plugin-test,egeland/aurelia-facebook,eriklieben/skeleton-plugin-typescript,egeland/aurelia-facebook,aurelia/skeleton-plugin,eriklieben/skeleton-plugin-typescript,genadis/aurelia-mdl,aurelia/skeleton-plugin