add readme, expand tests

test/main.js

@@ -57,7 +57,8 @@ describe('requestor', () => {
       'put-/sub/',
       'delete-/sub/',
       'all-/sub/',
-      'get-/sub/lv1/lv2/lv3/'
+      'get-/sub/lv1/lv2/lv3/',
+      'all-/sub/root/'
     ]);
   });
 });

test/sub/all-sub.root.js

@@ -0,0 +1,3 @@
+module.exports = (req, res, next, opts) => {
+  // dummy endpoint: do nothing
+};