Add note about eslint 3 [skip ci]
Add note about eslint 3 [skip ci]

babel/babel,kaicataldo/babel,kaicataldo/babel,kaicataldo/babel,jridgewell/babel,hzoo/babel,babel/babel,jridgewell/babel,kaicataldo/babel,jridgewell/babel,hzoo/babel,hzoo/babel,babel/babel,babel/babel,jridgewell/babel,hzoo/babel