Added ability to optionally pass in SiteId to configure IIS Site.

[dmorgan3405]

Added ability to optionally pass in SiteId to configure IIS Site. For Issue #844 .

Continued to clean up method signatures, and took a first pass at allowing defaulting faulting of SiteConfig properties. This would allow a user to implement a class, like the following, and supply defaults for the application or follow standards easier.

type UserSiteConfig(siteName:string, ?physicalPath:string)  = class
  let defaultPath = Path.Combine("c:\\inetpub\\wwwroot", siteName)
  let defaultPort = 80
  let defaultProtocol = "http"

  interface ISiteConfig with 
    member this.name = siteName
    member this.appPool = siteName
    member this.protocol = defaultProtocol 
    member this.binding = sprintf ":%d:%s" defaultPort siteName
    member this.physicalPath = defaultArg physicalPath defaultPath
    member this.id = None
end

Willing to continue to collaborate on pushing this module forward. Would love to get some unit tests wrapped around the current functionality to help test drive out future functionality.

[forki]

thx