Update install-release.sh
Update install-release.sh

1. add proxy support for downloading release ( for client under GFW )
2. stop v2ray daemon before update release
3. start v2ray daemon when finished
evolsnow/v2ray-core,ghmajx/v2ray-core,Amonhuz/v2ray-core,simpleman1984/v2ray-core,v2ray/v2ray-core,panzer13/v2ray-core,simpleman1984/v2ray-core,LiuWenJu/v2ray-core,ghmajx/v2ray-core,Amonhuz/v2ray-core,v2ray/v2ray-core,LiuWenJu/v2ray-core,simpleman1984/v2ray-core,panzer13/v2ray-core,evolsnow/v2ray-core