proxy.sh 取消kill的错误输出，不美观

原型
kill -9 `ps aux | grep 'python2.7 proxy.py' | grep -v grep | awk '{print $2}'` || true
修改
kill -9 `ps aux | grep 'python2.7 proxy.py' | grep -v grep | awk '{print $2}'` >/dev/null 2>&1 || true
Merge pull request #67 from tkisme/3.0

proxy.sh 取消kill的错误输出，不美观
Update README.md
smaller packages.egg
refine strip plugin
add [php]hosts support
Merge remote-tracking branch 'refs/remotes/goagent/3.0'