Added box-grouped, added functionality to run.py (see below)

You now have these options:

- run all code
  python run.py code

- run all images
  python run.py images

- run single code
  python run.py code examplename

- run single image
  python run.py images examplename

- run multiple code
  python run.py code examplename examplename ...

- run multiple images
  python run.py images examplename examplename ...