Temporary impl of binding provider

FubuBindingProvider.cs

	// Temporary : Needs discussion + test coverage (if used)
	public class FubuBindingProvider : BindingProvider
	{	
		private readonly ISparkItems _sparkItems;

		public FubuBindingProvider (ISparkItems sparkItems)
		{
			_sparkItems = sparkItems;
		}

		public override IEnumerable<Binding> GetBindings (IViewFolder viewFolder)
		{					
			var bindings = new List<Binding> ();

			foreach (var binding in _sparkItems.ByName("bindings")) {
				var file = viewFolder.GetViewSource (binding.ViewPath);
				using (var stream = file.OpenViewStream())
				using (var reader = new StreamReader(stream)) {
					bindings.AddRange (LoadStandardMarkup (reader));
				}					
			}		

			return bindings;
		}
	}