(docs) README tweaks

Author: addyosmani

README.md

@@ -1,12 +1,12 @@
-# Network-aware Components
+# Environment-aware Components
 
 Nothing to see here...yet.
 
-## Background
+## Network-aware Components
 
-Network-aware components use network signals to load the best version of a component or resource for the user's effective connection speed. 
+Network-aware components use the [Network Information API](https://developer.mozilla.org/en-US/docs/Web/API/Network_Information_API) to load the most suitable version of a component or resource for the user's effective connection speed. 
 
-Users on a slow (e.g 2G) connection may get a low-fi version while fast connections (e.g 4G) get a high-fi version.
+Users on a slow (e.g 2G) connection may get a light, low-fi version while fast connections (e.g 4G) get a high-fi version with more interactive features.
 
 This approach can enable a number of use-cases: