Update title in the README

src/TileSource.spec.js

@@ -0,0 +1,12 @@
+'use strict';
+const TileSource = require('./TileSource');
+
+describe('TileSource', () => {
+  describe('with a HTTP source', async () => {
+    const tileSource = new TileSource();
+    await tileSource.init('http://mapscii.me/');
+    test('sets the mode to 3', () => {
+      tileSource.mode = 3;
+    });
+  });
+});