Added timeout to experiments.
Command-based CLI.

* Renamed 'suite-run' to 'run:suite'.
* Added new comands 'exp:run', 'exp:setup' and 'exp:teardown'.
* Added isRunning() method to all systems.
* Added force parameter to experiment runs.
* Moved createGraph() method to the graph package.
* Moved loadConfig() method to the config package.