Update config.js
Update config.js

Babel options were incomplete - missed the es7 stuff
smccrea/aurelia-kendoui-plugin,aurelia-ui-toolkits/aurelia-kendoui-plugin,aurelia-ui-toolkits/aurelia-kendoui-bridge,aurelia-ui-toolkits/aurelia-kendoui-plugin,smccrea/aurelia-kendoui-plugin,aurelia-ui-toolkits/aurelia-kendoui-bridge