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documentation about documentation and adding files
I would find the following text helpful in or near this paragraph

e.g. if you add a new package called "utils" to the "nsls2" folder, the following setup.py file:

```
setup(
    name='NSLS2',
    version='0',
    author='Brookhaven National Lab',
    packages=["nsls2"],
    )
```

would need to be modified to:
```
setup(
    name='NSLS2',
    version='0',
    author='Brookhaven National Lab',
    packages=["nsls2", "nsls2.utils"],   <------- modification happened here
    )