Merge pull request #3 from gerbaudo/shorten-outds

shorten names
Thank you for your suggestion, @sparticlesteve :
the `--outputs "nt:susyNt.root"` option does the trick.
Merging now.
add J/psi and Upsilon samples for 3L

See email from Ryo 2014-08-26. Should check whether any event from
these could have leaked in our WH selection.
Merge pull request #4 from gerbaudo/master

shorten-outds forgotten commits