Honor X-Forwarded-Proto [GoDaddy]

[ritch]

See shelbys/strong-remoting@c049f13 for a fix

[bajtos]

#61 adds support for X-Forwarded-Host. Once it is landed, we can add support for the protocol too.

[bajtos]

We should support X-Forwarded-Port too.

[bajtos]

We should support X-Forwarded-Port too.

It turns out that X-Forwarded-Host contains the value of Host header, which includes both hostname and a port (if it is non-default).

Let's ignore X-Forwarded-Port for now and wait until somebody asks for such feature.

[seanbrookes]

waiting for Raymond to review #69