Changes to the publish-iis tool

[moozzyk]

The publish-iis tool underwent some breaking changes recently:

• the name of the package that contains the publish-iis tool was changed to Microsoft.AspNetCore.Server.IISIntegration.Tools. This requires changing your project.json file to inlude the "Microsoft.AspNetCore.Server.IISIntegration.Tools" package instead of the "dotnet-publish-iis" package.
• the tool needs now to distinguish portable apps from standalone apps to be able to write the web.config file correctly depending on the application type that is being published. This required adding a new, mandatory parameter --framework that tells the tool what framework the application was published for.
• since HttpPlatformModule was replaced with AspNetCoreModule
  the web.config created by the publish-iis tool now configures IIS to use AspNetCoreModule instead of HttpPlatformHandler to forward requests to Kestrel

The code snippet below shows how to configure the new publish-iis tool in project.json file

"tools": {
  "Microsoft.AspNetCore.Server.IISIntegration.Tools": {
    "version": "1.0.0-*",
    "imports": "portable-net45+wp80+win8+wpa81+dnxcore50"
  }
},
"scripts": {
  "postpublish": "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%"
}

Please use aspnet/IISIntegration#139 for discussion.