Added License file. Apache 2.0 License is a GPL3 compatible license. In essence as liberal as the X11 license but with patent protection.
Merge branch 'master' of github.com:x3dom/pipeline

* 'master' of github.com:x3dom/pipeline:
  new version of CAD template (last update from Nils)
  removed old version
  switched to x3dom fullscreen method
  updated x3dom files