[Snyk] Security upgrade webpack from 1.15.0 to 2.2.0#50

easonzhou wants to merge 1 commit intomastereasonzhou/react-starter-kit:masterfrom

snyk-fix-792639ef2c6a35dc7ad615efa9824ed6easonzhou/react-starter-kit:snyk-fix-792639ef2c6a35dc7ad615efa9824ed6Copy head branch name to clipboard