shadowsocks config

``` javascript
{
    "server":"xxx",
    "server_port":8388,
    "local_address": "127.0.0.1",
    "local_port":1080,
    "password":"xxx",
    "timeout":300,
    "method":"aes-256-cfb",
    "fast_open": false
}

```

ssserver -c /etc/shadowsocks.json -d start
ssserver -c /etc/shadowsocks.json -d stop
