chore(package): update jest to version 22.0.4
chore(package): update jest to version 22.0.4

Closes #600
ciscospark/react-ciscospark,ciscospark/react-ciscospark,adamweeks/react-ciscospark-1,ciscospark/react-ciscospark,adamweeks/react-ciscospark-1,adamweeks/react-ciscospark-1