updated documentation
Update file_format.md
Update getting_started.md
added first person controls and camera.zoomTo(node)
Merge branch 'develop' of https://github.com/potree/potree into develop
added move event listener to FirstPersonControls
read spacing from cloud.js; display only root from far away; added zoom factor to camera.zoomTo(node)
updated examples
added single file and minify build
updated docs
Merge pull request #44 from potree/build

Build