Added a bit more helpful details on how to use the event handler attr…

…ibutes

README.md

@@ -1,13 +1,22 @@
 # Proximity Sensors
 
-This is a reference implementation of the W3C's Proximity Sensor related specifications, namely:
-
- * [Proximity Events](http://dvcs.w3.org/hg/dap/raw-file/tip/proximity/Overview.html)
+This is a reference implementation of the W3C's [Proximity Events](http://dvcs.w3.org/hg/dap/raw-file/tip/proximity/Overview.html) specification. It can also be used as a polyfill. 
 
 # Using for testing
 
 Just do this and you are good to go: 
 
  * window.addEventListener('deviceproximity', function(e) { ... })
  * window.addEventListener('userproximity', function(e) { ... })
+
+Alternatively: 
+
+ * window.ondeviceproximity = function(e){ ... }
+ * window.onuserproximity = function(e){ ... }
+
+
+Enjoy! 
+
+# Using as polyfill or with Node.js
+Depending on what you want to do, you can remove the "FakeSensor" and replace it with a real sensor (so long as you use the same method names).