Update README.md
updated documentation
Merge branch 'documentation' of https://github.com/potree/potree into documentation
removed license text from all files
Merge branch 'master' of https://github.com/potree/potree
updated lion demo
added documentation for materials
updated materials documentation
Merge pull request #8 from potree/documentation

Documentation
Merge branch 'develop' of https://github.com/potree/potree into develop
added some procedural examples