Initial text and version updates for 2.1.0
2.0.0rc1 -> 2.0.0 final
VERSION -> 2.0.0rc1
Updated copyright to fix #68
Change version to 2.0.0d2 - there has to be a better way.
Debian copyright wants a real file, so change LICENSE to symlink.
Update for Mininet 2.0.0 development.
Mininet Pre-Beta -> Mininet 1.0.0; (c) 2009-2011
Changed license to OpenFlow license.
We may wish to change this just to "mininet is copyrighted by itsauthors" or something...