README for first build

src/popup.ts

@@ -23,7 +23,7 @@
 // the automatic submit is switched off, rate limited, or suppressed after a
 // logout.
 
-import { isConfigured, loadConfig, matchesSite } from './config';
+import { isConfigured, loadConfig, matchesSite } from './config.ts';
 
 const state = document.getElementById('state') as HTMLParagraphElement;
 const detail = document.getElementById('detail') as HTMLParagraphElement;