README update offer

[Tom]

Christian Britz wrote:

> 
> 1) Fabian Cenedese and others have made some good remarks about parts of 
> the README being not precise enough or a little bit wrong / outdated. I 
> would like to work on these sections.

If a Doc is outdated then it should be updated. I woul'd try
to do everything in one patch. This way the others won't have to
sync two or three extra times...

Just to say all other docs would then be out of sync
is not a good reason to have wrong docu.

Tom