Program.Main added to Microsoft.AspNet.Hosting to enable use as command-line entrypoint

[Tratcher]

Command line parameters and env variables
--port {port}
%PORT%
--uri {uri}
--server {assemblyname}
%K_SERVER% {assemblyname}
[application] first not-a-switch argument, "type,assemblyname" in type-based loader scenario

[Tratcher]

when [application] is not present, fallback to IApplicationEnvironment.ApplicationName

optimized for user or tooling adding to web project.json:
e.g. "commands": {"web", "Microsoft.AspNet.Hosting --port 14235"}