Work on message broker
Have inkling's iframe demo working locally (with new slider)
Implement simple MessageBroker based on inklings code.
Merge remote-tracking branch 'upstream/master' into youngsuk

merging from upstream
Merge remote-tracking branch 'upstream/master' into youngsuk

iframes
Implement simple MessageBroker and extend the EventManager to work with MB. Test with Kantorowski page
Tiny comment addition
todo comment addition
Merge pull request #74 from seannives/seann

Seann
Merge pull request #75 from ysahnpark/youngsuk

Youngsuk
removed some spaces to align comments
Merge pull request #76 from mlippert/master

minor spaces in comments
quick change to README
Merge remote-tracking branch 'upstream/master' into seann