Create HTTP Socket backend.
Creating HTTP-conns when host is prefixed with `http://` or `https://`
HttpSocket: Catch errors, so they don't bubble up.
HttpSocket: Remove irrelevant test.
HttpSocket: Update comments to match code.
HttpSocket: Increase buffer size + allow setting HTTP path and headers.
HttpSocket: Remove further irrelevant comments.
HttpSocket: Update to parse URL's and support HTTPS.
Merge pull request #42 from msiebuhr/metrics-over-http

Metrics over http