Add ptf.

install.sh

@@ -65,11 +65,19 @@ function install_git {
   fi
 }
 
+function add_bin_symlink {
+  local LINKNAME=${2:-`basename $1`}
+  ln -s ${1} ${HOME}/bin/${LINKNAME}
+}
+
 function postinstall {
   # Install Vundle plugins
   if [[ -d $HOME/.vim/bundle/Vundle.vim ]] ; then
     vim +VundleInstall +qall
   fi
+  # Install other useful tools
+  install_git https://github.com/trustedsec/ptf.git ${HOME}/bin/ptframework && \
+    add_bin_symlink ${HOME}/bin/ptframework/ptf
 }
 
 function ssh_key_already_installed {