DapperRow dynamic invocation fails in Visual basic - fix

Without the added BindInvokeMember override the following fails when using dapper in Visual Basic:

Using conn = New SqlClient.SqlConnection("connectionstring")

   Dim data = conn.Query("SELECT 1 AS A, 2 AS B").SingleOrDefault() 

   Dim A = data.A 

End Using

With the following error message:
Public member 'A' on type 'DapperRow' not found.


I don't fully understand what's going on in the DapperRow/table logic, but this seems to work, and all c# tests still completes succesfully. 

( this is my first ever pull request, so I am sorry if I missed something obvious ) :-)