Added license section

Added license section with link to license.
Merge pull request #75 from benhc123/patch-1

Added license section
Corrected wrong src path in COPYING
Rewriting paths failed in previous commit a936687d.
Client waited too long communicating work results back to application (fixes #77)
Reduce GAE index usage (#42)
Blender addon: Better handling of indirectly linked resources (#70)
Merge branch 'master' into experimental