[flux-dev] prototype install guide

[Martin Lippert <mlippert@xxxxxxxxx>]

Hey!

In preparation of a first incubation release of the latest code base of Flux, I improved the build to create all the necessary artifacts in the download area.
I also wrote up a description of what needs to be done in order to run all the different bits and pieces:

https://wiki.eclipse.org/Flux/Running_Flux

This is basically the RC for the incubation release.
Please give it a try and report problems and issues.

Thanks!
-Martin