Clean up README and clarify instructions

[karthik]

I found the readme confusing and opened issue #11. Based on the invitation, I submit this PR to clean up the steps for publishing.

[pdebuyl]

Hi @karthik

The start, "congratulations, ..." makes it look like the authors are the audience of the README. It is intended for editors only however, could

[pdebuyl]

sorry, hit enter

... could you make the audience of the README explicit at the top? It is actually good that you put it that way, so it becomes more explicit who does what.

[karthik]

Happy to edit that out. I actually meant that for editors who visit this document a few times a year.

[pdebuyl]

Indeed, it is congrats for "accepting" a paper, I read that too fast.

[rougier]

Ok, this is really much much better. Thanks a lot for writing it!

[rougier]

@khinsen @oliviaguest Any comment on that?

[khinsen]

An enormous improvement, thanks! I have left some comment with cosmetic corrections.