Dont auto generate last build date

Author: sathis

lib/index.js

@@ -39,7 +39,9 @@ function generateXML (data){
         channel.push({ image:  [ {url: data.image_url}, {title: data.title},  {link: data.site_url} ] });
     }
     channel.push({ generator:       data.generator });
-    channel.push({ lastBuildDate:   new Date().toUTCString() });
+    if (!data.omitBuildDate) {
+        channel.push({ lastBuildDate:   new Date().toUTCString() });
+    }
 
     ifTruePush(data.feed_url, channel, { 'atom:link': { _attr: { href: data.feed_url, rel: 'self', type: 'application/rss+xml' } } });
     ifTruePush(data.author, channel, { 'author': { _cdata: data.author } });
@@ -159,6 +161,7 @@ function RSS (options, items) {
     this.custom_namespaces  = options.custom_namespaces || {};
     this.custom_elements    = options.custom_elements || [];
     this.items              = items || [];
+    this.omitBuildDate      = options.omitBuildDate || false;
 
     this.item = function (options) {
         options = options || {};

test/expectedOutput/omitBuildDate.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0">
+    <channel>
+        <title><![CDATA[title]]></title>
+        <description><![CDATA[description]]></description>
+        <link>http://example.com</link>
+        <generator>RSS for Node</generator>
+        <atom:link href="http://example.com/rss.xml" rel="self" type="application/rss+xml"/>
+    </channel>
+</rss>

test/index.js

@@ -336,3 +336,17 @@ test('custom namespaces', function(t) {
 
     t.equal(feed.xml({indent: true}), expectedOutput.customNamespaces);
 });
+
+test('omit build date', function(t) {
+    t.plan(1);
+
+    var feed = new RSS({
+        title: 'title',
+        description: 'description',
+        feed_url: 'http://example.com/rss.xml',
+        site_url: 'http://example.com',
+        omitBuildDate: true
+    });
+
+    t.equal(feed.xml({indent: true}), expectedOutput.omitBuildDate);
+});