less: retain version 2 docs

lib/docs/scrapers/less.rb

@@ -1,7 +1,6 @@
 module Docs
   class Less < UrlScraper
     self.type = 'simple'
-    self.release = '3.12.0'
     self.base_url = 'http://lesscss.org'
     self.root_path = '/features'
     self.initial_paths = %w(/functions)
@@ -22,6 +21,14 @@ module Docs
       Licensed under the Creative Commons Attribution License 3.0.
     HTML
 
+    version '3' do
+      self.release = '3.12.0'
+    end
+
+    version '2' do
+      self.release = '2.7.2'
+    end
+
     def get_latest_version(opts)
       doc = fetch_doc('http://lesscss.org/features/', opts)
       label = doc.at_css('.footer-links > li').content