Add option -n that disables timeouts and memory limits.

This option allows running the experiments on Mac OS X. However, timeouts
and memory limits will not be imposed. Experiments with timeouts and
memory limits can still only be run on Linux due to platform dependence
of the "timeout" script.
Merge branch 'master' of github.com:jkeiren/pbesstategraph-experiments

Conflicts:
	run.py
Script that produces the table in the paper, given a yaml file.