chore(package): update webpack to version 1.12.15
chore(package): update webpack to version 1.12.15

http://greenkeeper.io/
lama-pacos/react-copy-to-clipboard,nkbt/react-copy-to-clipboard,nkbt/react-component-template,nkbt/react-debounce-input,nkbt/react-page-click,nkbt/react-collapse,nkbt/react-debounce-input,in-flux/react-component-router