Update Express.js documentation (4.8.8)

lib/docs/filters/express/entries.rb

@@ -7,8 +7,10 @@ module Docs
         doc.children.each_with_object [] do |node, entries|
           if node.name == 'h2'
             type = node.content
+            entries << [type, node['id'], 'Application'] if type == 'Middleware'
             next
           elsif node.name == 'h3'
+            next if type == 'Middleware'
             name = node.content.strip
             name.sub! %r{\(.+\)}, '()'
 

lib/docs/scrapers/express.rb

@@ -2,7 +2,7 @@ module Docs
   class Express < UrlScraper
     self.name = 'Express'
     self.type = 'express'
-    self.version = '4.8.7'
+    self.version = '4.8.8'
     self.base_url = 'http://expressjs.com/4x/api.html'
 
     html_filters.push 'express/clean_html', 'express/entries', 'title'