Delete method incorrectly cased

[stevewillcock]

Description

The Delete method is cased as 'Delete' instead of 'DELETE' which can cause a 501 not implemented with some servers (this happened with an akka http server (Scala, not .NET) in this case)

Known workarounds

Upper case the method name

  let myApi = MyProviderApi(CustomizeHttpRequest = fun (req:System.Net.HttpWebRequest) ->
                                                             req.Method <- req.Method.ToUpper() // Due to issue with "Delete" method
                                                             req)