Add disclaimer about r/unixsocks

[psionic-k]

Everything was named so because this is socks for...unix sockets. I'm sure there are great socks on r/unixsocks, and I have nothing against socks, but people might install this thinking that it's a social media application for sharing selfies of socks with unix. That's totally not what it is. Although if you were using a VPN exposed on your local machine as a unix socket and wanted to forward an application to connect to r/unixsocks or to otherwise trade pictures of socks & unix, unixsocks could still play a role.