Broken demos - patch

@thetron I have updated the API js path which was breaking the demos.

Some time soon we should also look at using the http://ifish.io domain. Currently all iFish demos + Book Exploramatic are pointing to [http://www.ifish.invo.lv/assets/api/v1/fishpond.js][http://www.ifish.invo.lv/assets/api/v1/fishpond.js]


Do you mind merging this request and also deploying to GH Pages? 

Cheers :metal: