Enable binder

[emiliom]

Instructions from Bart:

See

• https://github.com/waterhackweek/gridded_data and then look at the binder branch
• https://github.com/waterhackweek/gridded_data/tree/binder

All it really needs for binder to work is a binder directory with a few files, specifying the environment, etc. It can then be launched on https://binder.pangeo.io

I included the button in the README.md on github that you can use to launch directly on binder.pangeo.io. The code for that is: [![Binder](https://binder.pangeo.io/badge.svg)](https://binder.pangeo.io/v2/gh/waterhackweek/gridded_data/binder)

[emiliom]

https://kbroman.org/blog/2019/02/18/omg_binder/

[emiliom]

See Scott's minimalist example with pangeo binder enabled: https://github.com/scottyhq/measures-panel. It's way simpler than Bart's configuration

[emiliom]

I've implemented it, but I'll leave the issue open as a reminder to double check. It's a big conda environment and I've noticed cases where the binder build doesn't succeed.