xmlwriter indent option and documentation

README.md

@@ -58,6 +58,13 @@ xamel.parse(xmlSource, { buildPath : 'root/body/article' }, function(err, xml) {
 
 You can also check the [partial parsing test](https://github.com/nodules/xamel/blob/master/test/parse.js#L25).
 
+## xamel.serialize(nodeset, [options])
+
+ * `nodeset` NodeSet to serialize;
+ * `options` parsing options:
+   * `header` – when evaluated to `false` the document will not contain a `<?xml?>` header, `true` by default;
+   * `pretty` – when evaluated to `true` the document will be beautified with indents and line breaks, `false` by default;
+
 ## NodeSets and map/reduce
 
 Result of `xamel.parse(…)` is a NodeSet. You can think of NodeSet as an array of nodes (internally it's true). 

lib/serialize.js

@@ -65,7 +65,7 @@ function serialize(nset, options) {
         options = {};
     }
 
-    var xw = new XMLWriter();
+    var xw = new XMLWriter(options.pretty);
 
     if (options.header !== false) {
         xw.startDocument();