Add in babel-core dep.
Add in babel-core dep.

MirekSz/webpack-es6-ts,MirekSz/webpack-es6-ts,joelaguero/portfolio-2017,keokilee/react-typescript-boilerplate,keokilee/react-typescript-boilerplate,MirekSz/webpack-es6-ts,lukephills/react-typescript-boilerplate,keokilee/react-typescript-boilerplate,lukephills/react-typescript-boilerplate,joelaguero/portfolio-2017,lukephills/react-typescript-boilerplate,joelaguero/portfolio-2017