add github script

+#!/bin/bash
+
+echo "submit code to github.com"
+
+echo "argv[0]=$0"
+if [[ ! -f $0 ]]; then 
+    echo "directly execute the scripts on shell.";
+    work_dir=`pwd`
+else 
+    echo "execute scripts in file: $0";
+    work_dir=`dirname $0`; work_dir=`(cd ${work_dir} && pwd)`
+fi
+work_dir=`(cd ${work_dir}/.. && pwd)`
+product_dir=$work_dir
+
+# allow start script from any dir
+cd $work_dir && git checkout master
+
+. ${product_dir}/scripts/_log.sh
+ret=$?; if [[ $ret -ne 0 ]]; then exit $ret; fi
+ok_msg "导入脚本成功"
+
+source $work_dir/scripts/_mirror.utils.sh
+
+git remote -v|grep github.com >/dev/null 2>&1
+ret=$?; if [[ 0 -ne $ret ]]; then 
+    echo "current not under github.com branch"
+    exit -1; 
+fi 
+
+sync_push "Github"
+
+exit 0