Add Class as alias of ClassName

Author: alfonsogarciacaro

src/Fable.React/Fable.Helpers.React.fs

@@ -114,6 +114,8 @@ module Props =
         | Checked of bool
         | ClassID of string
         | ClassName of string
+        /// Alias of ClassName
+        | [<CompiledName("ClassName")>] Class of string
         | Cols of float
         | ColSpan of float
         | Content of string