Add support for building and using this behind a SOCKS proxy

[emdee-is]

This will be a great tool to use, but I'm behind a SOCKS proxy, and I can't even build it!

go: github.com/alexbakker/tox4go@v0.0.0-20170617131442-f2fe5c787e3e: Get "https://proxy.golang.org/github.com/alexbakker/tox4go/@v/v0.0.0-20170617131442-f2fe5c787e3e.mod": unexpected EOF

There are no instructions for how to download the required components, which is needed behind firewalls, or any corporate environment that restricts downloads (Go has googlitus -:).

Could you add support for building and using this behind a SOCKS proxy?

[alexbakker]

All you need to build ToxStatus is the Go toolchain. Making it connect through a SOCKS proxy to fetch dependencies is probably possible, but might take some Googling to figure out.

With regards to adding SOCKS support for ToxStatus itself, I'd be happy to review a pull request for that.

[emdee-is]

If you weren't using Go I might be able to help: no googlitus for me!

BTW - are there any public instances of Echobot running (I know off repo :-()