Update README to reflect {index,hosted}.html

README.md

@@ -1,4 +1,6 @@
-This starter kit provides two alternate HTML files: `index.html` loads the Touch JS/CSS libraries from [Sencha's content delivery network][cdn] (CDN); `local.html` loads the libraries locally. Using Sencha's CDN is most convenient, because it does not require you to download the Sencha Touch SDK, but it does require an internet connection. If you are working offline, then you will have to [install the Sencha Touch libraries][installation].
+This starter kit provides two alternate HTML files: `index.html` loads the libraries locally; `hosted.html` loads the Touch JS/CSS libraries from [Sencha's content delivery network][cdn] (CDN).
+
+Using Sencha's CDN means that you don't have to download the Sencha Touch SDK, but it does require an internet connection. Also, since the `Ext.Loader` fetches framework dependencies dynamically, it makes dozens of separate HTTP requests, which causes a slow page load. During development, you're better off working a local copy of the Sencha Touch SDK. Follow these instructions to [install the Sencha Touch libraries][installation].
 
 [cdn]: http://cdn.sencha.io/
 [installation]: https://github.com/nelstrom/Sencha-Touch-Boilerplate/tree/master/touch#readme