Add simple Sidekiq::Web example

examples/web/Gemfile

@@ -0,0 +1,5 @@
+source 'https://rubygems.org'
+
+gem 'sidekiq', path: '../../'
+gem 'thin'
+gem 'pry'

examples/web/config.ru

@@ -0,0 +1,14 @@
+require 'sidekiq/web'
+require 'redis'
+
+$redis = Redis.new
+
+class SinatraWorker
+  include Sidekiq::Worker
+
+  def perform(msg="lulz you forgot a msg!")
+    $redis.lpush("sinkiq-example-messages", msg)
+  end
+end
+
+run Sidekiq::Web