Add European mode

For Aloodo, European mode works the same as regular
mode.

This is to help test browser extensions that look
for sites that treat European and non-European users
differently.

Extensions can test if the page they're on has Aloodo
and European mode is available, with:

```
window.aloodo && typeof(aloodo.setEuropeanMode)
```

Example (work in progress):
  https://github.com/dmarti/trans-europa-express

track.js

@@ -68,19 +68,29 @@
 		console.log('[Aloodo]['+method+'] '+message);
 	};
 
-	Aloodo.prototype.setOption = function(options, value) {
-		if(value !== undefined) {
-			var key = options;
-			options = {};
-			options[key] = value;
-		}
-		for(var option in options) {
-			this._options[option] = options[option];
-			this._dlog('setOption', 'The option "'+option+'" was assigned to "'+options[option]+'"');
+	Aloodo.prototype.getOption = function(key) {
+		if (this._options.hasOwnProperty(key)) { 
+			return this._options[key];
+		} else {
+			return undefined;
 		}
+	};
+
+	Aloodo.prototype.setOption = function(key, value) {
+		this._options[key] = value;
+		this._dlog('setOption', 'The option "' + key + '" was assigned the value "'+this._options[key]+'"');
 		return this;
 	};
 
+	Aloodo.prototype.setEuropeanMode = function(value) {
+		this._dlog('Setting European Mode to: ' + value);
+		return this.setOption('EuropeanMode', value);
+	};
+
+	Aloodo.prototype.getEuropeanMode = function(value) {
+		return this.getOption('EuropeanMode');
+	};
+
 	Aloodo.prototype._addIFrame = function() {
 		function postMsg() {
 			window.postMessage('Aloodo iframe loaded', '*');