[Rivet] Les Houches use of Multi-Events branch

[David Grellscheid]

Hi all,

Do you have any objections if I provide a tarball of the multi-events 
branch for a Les Houches study? Daniel Maitre helped me get it into 
shape, and I think it would be a good early test case. I've mentioned 
all the usual caveats, and I hope that we'll have a release out by the 
time they publish their studies as well.

Please reply soon!

Thanks,

   David