Add missing license header to compress.js and correct typo.

Author: codedread

README.md

@@ -90,7 +90,7 @@ unzipper.update(anArrayBufferWithYetMoreBytes);
 
 #### Compressing
 
-The Zipper only supports creating zip files without compression (story only) for now. The interface
+The Zipper only supports creating zip files without compression (store only) for now. The interface
 is pretty straightforward and there is no event-based / streaming API.
 
 ```javascript

archive/compress.js

@@ -1,3 +1,12 @@
+/**
+ * compress.js
+ *
+ * Provides base functionality for compressing.
+ *
+ * Licensed under the MIT License
+ *
+ * Copyright(c) 2023 Google Inc.
+ */
 
 // NOTE: THIS IS A VERY HACKY WORK-IN-PROGRESS! THE API IS NOT FROZEN! USE AT YOUR OWN RISK!