add HTTP 1.1 support
define a default virtual host

which replies with HTTP code `503 Service Temporarily Unavailable`
Merge pull request #12 from thomasleveil/patch-2

define a default virtual host
Merge pull request #11 from thomasleveil/patch-1

add HTTP 1.1 support
Stream logs to stdout/err

Nginx and docker-gen logs can now be seen via docker logs.
Fix for long server names
Merge pull request #13 from paimpozhil/master

Fix for long server names
Use ddollar/forego v0.9.0
Support multiple VIRTUAL_HOSTs per container.

Fixes #3