chore(package): update babel-preset-es2015 to version 6.22.0
chore(package): update babel-preset-es2015 to version 6.22.0

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adamweeks/react-ciscospark-1,bzang/react-ciscospark,Altocloud/alto-react-ciscospark,bzang/react-ciscospark,ciscospark/react-ciscospark,Altocloud/alto-react-ciscospark,adamweeks/react-ciscospark-1,adamweeks/react-ciscospark-1,ciscospark/react-ciscospark,Altocloud/alto-react-ciscospark,ciscospark/react-ciscospark,bzang/react-ciscospark