install and configure ns3 on ubuntu

1. wiki: install ns3
• download ns3 tar
• install pre requirements: sudo apt-get install
  

  gcc g++ python python-dev qt4-dev-tools libqt4-dev mercurial bzr cmake libc6-dev 

  libc6-dev-i386 g++-multilib gdb valgrind gsl-bin libgsl0-dev libgsl0ldbl flex bison 

  libfl-dev tcpdump sqlite sqlite3 libsqlite3-dev libxml2 libxml2-dev libgtk2.0-0 

  libgtk2.0-dev vtun lxc uncrustify doxygen graphviz imagemagick texlive 

  texlive-extra-utils texlive-latex-extra texlive-font-utils dvipng python-sphinx dia 

  python-pygraphviz python-kiwi python-pygoocanvas libgoocanvas-dev libboost-signals-dev 

  libboost-filesystem-dev openmpi-bin openmpi-common openmpi-doc libopenmpi-dev