adding config.js.example

src/config.js.example

@@ -0,0 +1,12 @@
+import { timemap } from './lib'
+
+export default {
+  gsheets: [],
+  xlsx: [
+    {
+      name: 'timemap_data',
+      path: 'data/timemap_data.xlsx',
+      tabs: timemap.default
+    }
+  ]
+}