Merge pull request #2 from andris9/master

CDATA blocks with ] or [ characters inside

Notes in our README regarding no parsing support for CDATA sections will remain. Please notice that we also provide a way to generate reversible json and this patch doesn't resolve that case.  The right way to parse CDATA sections will be something like: 

1. xml2json: Handling startCdata and endCdata events coming from node-expat
2. xml2json: In order to continue supporting reversible json, generate a new identifier to represent the cdata section in json.
3. json2xml: generate the CDATA sections in xml appropriately 
4. write tests

lib/xml2json.js

@@ -39,7 +39,7 @@ function text(data) {
     if (!data.length) {
         return;
     }
-    currentObject['$t'] = data;
+    currentObject['$t'] = (currentObject['$t'] || "") + data;
 }
 
 function endElement(name) {