Update Redis documentation (2.8.9)

lib/docs/filters/redis/entries.rb

@@ -18,6 +18,7 @@ module Docs
         when 'EVAL'         then 'Scripting'
         when 'AUTH'         then 'Connection'
         when 'BGREWRITEAOF' then 'Server'
+        when 'PFADD'        then 'HyperLogLog'
         else 'Miscellaneous'
         end
       end

lib/docs/scrapers/redis.rb

@@ -1,7 +1,7 @@
 module Docs
   class Redis < UrlScraper
     self.type = 'redis'
-    self.version = 'up to 2.8.8'
+    self.version = 'up to 2.8.9'
     self.base_url = 'http://redis.io/commands'
 
     html_filters.push 'redis/entries', 'redis/clean_html', 'title'