changed json_prolog import statement for knowrob_motion_constraints
Merge pull request #16 from bbrieber/indigo-devel

changed json_prolog import statement for knowrob_motion_constraints
Merge branch 'indigo-devel' of https://github.com/knowrob/knowrob_addons into indigo-devel
added more experiments, updated predicated for handling multiple experiments and fixed bug.