more harmony docs

README.md

@@ -158,7 +158,7 @@ var db = mongojs('rs-1.com,rs-2.com,rs-3.com/mydb?slaveOk=true', ['mycollection'
 
 For more detailed information about replica sets see [the mongo replication docs](http://www.mongodb.org/display/DOCS/Replica+Sets)
 
-## Using with harmony
+## Using harmony features
 
 If you run node.js with the `--harmony` option, then you can ommit the collection names array, and you can do stuff like.
 
@@ -169,6 +169,8 @@ var db = require('mydb');
 db.hackers.insert({name: 'Ed'});
 ```
 
+In the above example the `hackers` collection is enabled automagically (similar to the shell) using the `Proxy` feature in harmony
+
 # API
 
 This API documentation is a work in progress.