if you beam a holographic app before it has loaded an object it will go to a 2d enclosure

[amberroy]

reported by @GavanWilhite 6/12/2015. We brainstormed possible solutions:

• beam check at BrowserApi line 99.
• create a 'Used' flag in ThreeJS Api (needs to be cleared in Clear when the page changes). whenever a load starts, could get the flag flipped early enough to be less of an issue
• have loading screens that say 'wait until loading is complete before beaming', but the issues is we won't know if the objects are necessarily done loading in threejs
• do something with the meta viewport tag in HTML <meta name="enclosure" content="holographic">

[GavanWilhite]

The flag is flipped as soon as a renderer is requested so detection should be much faster and this issue should happen less often