Open Free Energy Binder instance of notrebook fails to start.

[xyzmjf]

Hi All. Not sure if this is appropriate as it may be a Binder issue and not an OpenFE issue. However the Binder instance of the RBFE tutorial fails to load (for me) after waiting a few hours.

https://mybinder.org/v2/gh/OpenFreeEnergy/ExampleNotebooks/HEAD?labpath=openmm-rbfe%2FOpenFE_showcase_1_RBFE_of_T4lysozyme.ipynb

The link is this one (http://try.openfree.energy/) from the project home page https://openfree.energy/
Hence I would expect this is the experience most people will see if they arrive at the project home page and click the "try it online" button.

[dwhswenson]

Binder is basically dead. We're working on moving to colab. We just haven't had dev time for it (since Binder basically went under a couple weeks before the OMSF meeting). See #55 for progress.