Update minimum Node version in README (#7182)
Update minimum Node version in README (#7182)


facebookincubator/create-react-app,facebookincubator/create-react-app,d3ce1t/create-react-app,d3ce1t/create-react-app,jdcrensh/create-react-app,facebookincubator/create-react-app,Timer/create-react-app,GreenGremlin/create-react-app,GreenGremlin/create-react-app,GreenGremlin/create-react-app,jdcrensh/create-react-app,GreenGremlin/create-react-app,jdcrensh/create-react-app,jdcrensh/create-react-app,Timer/create-react-app,Timer/create-react-app,d3ce1t/create-react-app,Timer/create-react-app,d3ce1t/create-react-app