I've shipped and made public the latest version of happyFunTimes. It includes
superhappyfuntimes.net which is a gallery for games that use the system.
It also includes native installers for Windows and OSX so your nephew and niece and play the games you made. As long as players' phones are on the same router with the computer running HappyFunTimes they can visit
http://happyfuntimes.net on their phone and they'll automatically get directed to the machine on the local network running happyfuntimes
For anyone that made a game before today (September 10th 2014) you'll need to do some migration work. If you're lucky it won't take more than an hour. I'm sorry about that. I'll do my best not to break things in the future but to get all the games to run separately and it make it so I can update the common bits I had to make some changes.
Some migration docs can be found here