Fixed panic on Resource when posting to /name instead of /name/

resource.go

@@ -30,7 +30,7 @@ func NewResource(list, create Func, get, update, delete IDFunc) *Resource {
 func (resource *Resource) Handle(path string, w http.ResponseWriter, req *http.Request, user *auth.User) bool {
 	// Get the subpath out of the path
 	subpath := req.URL.Path[len(path):]
-	if subpath[0] == '/' {
+	if len(subpath) > 0 && subpath[0] == '/' {
 		subpath = subpath[1:]
 	}