Pass forwarded port to FastCGI
Pass forwarded port to FastCGI

Set `SERVER_PORT` to the forwarded port (from the client) as sent by the
Heroku Router. This resolves #8

xyu/heroku-wp,benmcntsh/fortnite-builder,benmcntsh/fortnite-builder,jorgeas80/heroku-wp,eduardofelipevieira/cursodev,oddevan/heroku-wp,oddevan/heroku-wp,oddevan/heroku-wp,jorgeas80/heroku-wp,benmcntsh/fortnite-builder,eduardofelipevieira/cursodev,jorgeas80/heroku-wp,eduardofelipevieira/cursodev,xyu/heroku-wp,xyu/heroku-wp