[ns] website for ns-3 project

[Tom Henderson]

In July, we announced that a team of PIs, in collaboration with INRIA,
had obtained funding from NSF to develop the next major version of ns-3:
http://mailman.isi.edu/pipermail/ns-users/2006-July/056352.html

A small team of us has worked hard over the summer to establish some
project infrastructure, initial designs, and initial code, and we'd like
to announce its availability today at the following website:
http://www.nsnam.org

We will regularly maintain that website and the documentation contained
therein.  Please visit our website if you are interested in contributing
or in tracking the project.  We plan to hold technical discussions on 
the existing ns-developers mailing list.

-Tom