So, I just learned Dropbox's public folder don't work anymore. Sigh.
Anyway, I exported the pong example and uploaded to pong-siks-airconsole.bitballoon.com/. To use AirConsole, your index.html will become screen.html and you need to have a controller.html too. The bitballoon page won't upload something without a index.html file, which kinda makes sense, so I just threw an empty index.html.
Turns out doing https://www.airconsole.com/?pong-siks-airconsole.bitballoon.com/ like — just takes me to the main page ignoring the parameter so I'm not sure what's wrong.
I can, however, use their simulator using http://www.airconsole.com/simulator/#http://pong-siks-airconsole.bitballoon.com/. It loads the controllers super fast and you can even use your smartphone to login the game, but it takes a quite a long time to load the main page but it does load. Sadly, the controllers don't respond and the game is acting like there are no controllers on.
Of course, I'm trying some random free server for testing, as I don't own a server for me.
EDIT: Using http://www.airconsole.com/?http=1#http://pong-siks-airconsole.bitballoon.com/ goes the same as the simulator.