missing dev environment file

[raybellwaves]

I was working with a dev env via https://satpy.readthedocs.io/en/latest/dev_guide/index.html#development-installation
but realized it didn't have the gcsfs dependency and others

Not sure if a dependency env file could be added (see https://docs.dask.org/en/latest/develop.html#install)

[djhoese]

I'm not sure gcsfs would be included in a typical dev env file. It is only used for downloading demo data right now. I think we'd have to have a separate demo environment file or something.

[raybellwaves]

Yeah not a bad idea. Maybe an env file that will run all the notebooks in the examples folder

[raybellwaves]

Hope you don't mind I renamed the title taking in to consideration of your feedback. I also moved some of my origin of this issue to an issue at pytroll-examples pytroll/pytroll-examples#32

[djhoese]

The pytroll-examples repository has a yaml env file that is used by binder. That is probably good enough and i think is described in the readme as an installation option. If not there maybe i put it in my four hour tutorial readme. I'll have to look next week.