Removed GPL instructions from license.
Merge pull request #802 from rhyolight/clean-license

Removed GPL instructions from license.
Add spatialImp option to multistep/hotgym experiment description file
Use cpp implementation of SP as default in hotgym example
Merge pull request #804 from chetan51/hotgym_spatialImp

Add spatialImp option to multistep/hotgym experiment description file
SHA update