Added Item.toString() and moved save logic there.

tests/run.js

@@ -7,9 +7,7 @@ po.load('text.po', function(_po){
   _po.save('copy.po', function(){
     var orig = fs.readFileSync('text.po');
     var data = fs.readFileSync('copy.po');
-    
-    console.log(data == orig);
     assert.equal(orig, data, 'Saved data is identical to original.');
   });
 });
-  
+