Add runtwin.sh bash script for interactive test

git-svn-id: http://qboxcode.org/svn/qb/trunk@1915 cba15fb0-1239-40c8-b417-11db7ca47a34

util/qbdriver/runtwin.sh

+#!/bin/bash
+exe=../../src/qb
+mpirun -np 1 $exe -server qbin_0 qbout_0 > qblog_0 &
+mpirun -np 1 $exe -server qbin_1 qbout_1 > qblog_1 &
+./twin qbin qbout > twin.out &
+wait