added stop.sh script into the example tmux session

ros_packages/mrs_uav_gazebo_simulation/tmux/one_drone/stop.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+# Absolute path to this script. /home/user/bin/foo.sh
+SCRIPT=$(readlink -f $0)
+# Absolute path this script is in. /home/user/bin
+SCRIPTPATH=`dirname $SCRIPT`
+cd "$SCRIPTPATH"
+
+export TMUX_SESSION_NAME=simulation
+export TMUX_SOCKET_NAME=mrs
+
+# just attach to the session
+tmux -L $TMUX_SOCKET_NAME split-window -t $TMUX_SESSION_NAME
+tmux -L $TMUX_SOCKET_NAME send-keys -t $TMUX_SESSION_NAME "sleep 1; tmux list-panes -s -F \"#{pane_pid} #{pane_current_command}\" | grep -v tmux | cut -d\" \" -f1 | while read in; do killp \$in; done; exit" ENTER