Get NGLView working in Jupyter Lab on Binder (#6)

* Try correcting Binder install so NGLView works

* try some stuff from hainm/nglview-binder

* try more direct copy of hainm's stuff

* jupyterlab < 3

* remove no-build

binder/environment.yml

@@ -5,9 +5,11 @@ channels:
   - defaults
 dependencies:
   - jupyter
+  - nodejs
   - nglview
   - openmm
   - tqdm
   - openpathsampling
   - openmmtools
+  - jupyterlab <3
 prefix: /Users/dwhs/miniconda3/envs/ops-tutorial

binder/postBuild

+nglview install && nglview enable
+jupyter labextension install @jupyter-widgets/jupyterlab-manager
+jupyter labextension install nglview-js-widgets@2.7.7
+jupyter nbextension enable nglview --py --sys-prefix
 bash ./devtools/download-files