use countryCode instead of country in examples (#74)

I think using country is not right.

README.md

@@ -4,7 +4,7 @@
 
 [![Build Status](https://travis-ci.org/jcblw/geode.svg?branch=master)](https://travis-ci.org/jcblw/geode)[![Coverage Status](https://coveralls.io/repos/github/jcblw/geode/badge.svg?branch=master)](https://coveralls.io/github/jcblw/geode?branch=master)
 
-locations api in node from www.geonames.org
+Locations API in node from www.geonames.org
 
 ## Install
 
@@ -14,12 +14,11 @@ npm install geode
 
 ## Use
 
-you will need an account ~ *its free*
-#####[Signup](http://www.geonames.org/login)
+You will need an account ~ *its free* ([signup](http://www.geonames.org/login)).
 
 ```javascript
 //include
-var geo = new geode('username', {language: 'en', country : 'US'})
+var geo = new geode('username', {language: 'en', countryCode : 'US'})
 
 geo.search({name :'Riverside'}, function(err, results){
 	console.log([err, results])
@@ -28,14 +27,12 @@ geo.search({name :'Riverside'}, function(err, results){
 
 ## Demo
 
-Heres a simple Express App throwing up an api
-
-####[Demo](http://geode-demo.herokuapp.com/search.json?q=riverside&maxRows=2)
+Here is a simple Express App throwing up an API. (see [demo](http://geode-demo.herokuapp.com/search.json?q=riverside&maxRows=2)).
 
 The express code is just
 
 ```javascript
-var api = new Geode('username', {country: "US", language: 'en'});
+var api = new Geode('username', {countryCode: "US", language: 'en'});
 
 app.get('/:collection.:format', function(req, res){
   if(req.params.collection && req.params.format){