gcsl_example script cannot find imports

[anthonycaterini]

The command python experiments/gcsl_example.py fails as it cannot access the doodad module which it is trying to import. I suspect that the gcsl package was installed as editable and gave access to these directories anywhere in the conda environment, but I am not sure we should rely on this behaviour.

A quick fix for me was just moving gcsl_example.py up one directory.