Update Backbone.js documentation (1.2.2)

lib/docs/filters/backbone/entries.rb

@@ -30,8 +30,8 @@ module Docs
           name = node.at_css('.header').content.split.first
 
           # Underscore methods
-          if name == 'Underscore'
-            node.next_element.css('li').each do |li|
+          if name.start_with?('Underscore')
+            node.at_css('~ ul').css('li').each do |li|
               name = [type.downcase, li.at_css('a').content.split.first].join('.')
               id = name.parameterize
               li['id'] = id

lib/docs/scrapers/backbone.rb

@@ -3,7 +3,7 @@ module Docs
     self.name = 'Backbone.js'
     self.slug = 'backbone'
     self.type = 'underscore'
-    self.version = '1.2.1'
+    self.version = '1.2.2'
     self.base_url = 'http://backbonejs.org'
     self.links = {
       home: 'http://backbonejs.org/',