Add pagination by max_id instead of offset/limit

app/controllers/api/statuses_controller.rb

@@ -23,11 +23,11 @@ class Api::StatusesController < ApiController
 
   def home
     feed      = Feed.new(:home, current_user.account)
-    @statuses = feed.get(20, (params[:offset] || 0).to_i)
+    @statuses = feed.get(20, params[:max_id] || '+inf')
   end
 
   def mentions
     feed      = Feed.new(:mentions, current_user.account)
-    @statuses = feed.get(20, (params[:offset] || 0).to_i)
+    @statuses = feed.get(20, params[:max_id] || '+inf')
   end
 end