fixed spincube demo
Merge branch 'master' of https://github.com/febret/omegalib
Merge branch 'master' of https://github.com/febret/omegalib
Merge branch 'master' of https://github.com/febret/omegalib
Merge branch 'master' of https://github.com/febret/omegalib
Update README.md
Merge branch 'master' of https://github.com/febret/omegalib

Conflicts:
	examples/python/spincube.py
Merge branch 'master' into bullet-febret