documentation: make pretty, web rendered-docs

[vsoch]

Reference: #49 (comment)

Note that scheduling pods with kube-scheduler and Fluence on the same cluster isn't supported. There isn't currently any way to propagate pod-to-node mappings generated by kube-scheduler to Fluence.

And for our testing cases:

It's important that kubectl apply -f fluence-job.yaml is executed before kubectl apply -f default-job.yaml, and that they don't specify limits or requests so they could be scheduled on the same node. That's currently the case in this PR, but I'm emphasizing it for posterity.

And a point of emphasis that is needed (the original title of this issue):

docs needed: emphasize cannot run kube default scheduler with fluence

[milroy]

The README does mention this in passing: "Note that Fluence does not currently support use in conjunction with the kube-scheduler. Pods must all be scheduled by Fluence."

However, more explanation and detail should be added.