createRequest assigns the wrong success callback

[DaDummy]

According to the comment in logSuccess the hello-world sample should use the broadcast functionality of PubSub to trigger the actual color change.

extensions-hello-world/public/viewer.js

Lines 56 to 60 in b5eb29a

	function logSuccess(hex, status) {
	// we could also use the output to update the block synchronously here,
	// but we want all views to get the same broadcast response at the same time.
	twitch.rig.log('EBS request returned '+hex+' ('+status+')');
	}

But due to createRequest pointing to updateBlock instead of logSuccess the current implementation effectively does not need broadcasts when tested with a single user.

extensions-hello-world/public/viewer.js

Lines 14 to 22 in b5eb29a

	function createRequest(type, method) {
	return {
	type: type,
	url: 'https://localhost:8081/color/' + method,
	success: updateBlock,
	error: logError
	}
	}