AppBase.cs

namespace Our.Umbraco.AutoTweet.Web
{
    public class AppBase : ApplicationBase 
    {
        public AppBase()
        {
            RegisterAssemblyReslover();
        }

        private void RegisterAssemblyReslover()
        {
            AppDomain.CurrentDomain.AssemblyResolve += (sender, args) =>
            {
                var resourceName = "Our.Umbraco.MyPackage.Assemblies." + new AssemblyName(args.Name).Name + ".dll";
                using (var stream = Assembly.GetExecutingAssembly().GetManifestResourceStream(resourceName))
                {
                    if (stream == null)
                        return null;

                    var assemblyData = new Byte[stream.Length];
                    stream.Read(assemblyData, 0, assemblyData.Length);
                    return Assembly.Load(assemblyData);
                }

            };
        }
}