Adding homepage to xml. Adding documentation.

README.markdown

@@ -1,3 +1,13 @@
-= Spree Sitemaps
+SUMMARY
+=======
 
-Sitemap management for spree.
+This extension creates sitemaps in .html, .txt, and .xml (google sitemap) formats.
+
+INSTALLATION
+------------
+
+1. Clone the git repo to SPREE_ROOT/vendor/extensions/sitemaps
+
+      git clone git://github.com/stephp/spree-sitemaps.git sitemaps
+
+2. Sitemap is accessible at public_domain/sitemap.html, public_domain/sitemap.xml, and public_domain/sitemap.txt

app/controllers/sitemap_controller.rb

@@ -17,6 +17,12 @@ def _build_xml(nav, public_dir)
       xml = Builder::XmlMarkup.new(:target => output, :indent => 2) 
       xml.instruct!  :xml, :version => "1.0", :encoding => "UTF-9"
       xml.urlset( :xmlns => "http://www.sitemaps.org/schemas/sitemap/0.9" ) {
+        xml.url {
+          xml.loc public_dir
+          xml.lastmod Date.today
+          xml.changefreq 'daily'
+          xml.priority '1.0'
+        }
         nav.each do |k, v| 
           xml.url {
             xml.loc public_dir + v['link']