Culture invariant IUrlParameterFormatter for https://github.com/reactiveui

InvariantUrlParameterFormatter.cs

using System;
using System.Globalization;
using System.Reflection;

namespace Refit
{
    public sealed class InvariantUrlParameterFormatter : IUrlParameterFormatter
    {
        public string Format(object parameterValue, ParameterInfo parameterInfo)
        {
            if (parameterValue == null) return null;
            return Convert.ToString(parameterValue, CultureInfo.InvariantCulture);
        }
    }
}