Support for aframe 1.5.0

[gmarty]

Hi. a-starry-sky is not compatible with the latest version of A-Frame (1.5.0). Fortunately, the only changes required to make it work are renaming some Three.js calls to API that changed.

new THREE.PlaneBufferGeometry => new THREE.PlaneGeometry
new THREE.DataTexture3D => new THREE.Data3DTexture
new THREE.IcosahedronBufferGeometry => new THREE.IcosahedronGeometry

Once that is done, it seems to work, but there may be breaking changes I haven't noticed.

[Dante83]

Three always did love changing names XD. Sorry about the late reply, will try and update this over the weekend and see if it all works again. Thanks for letting me know!

[Dante83]

Something is still off and I'm not getting the sky to show up. But I implemented those changes and I can proceed next weekend to see what might have broke between these two things. There are no blaring errors, only a couple of small deprecation warnings, so I fear the problem might be a little hairy.

PR: #7