Add experimental Redis front-end

Procfile

@@ -1,3 +1,3 @@
-web: bundle exec rackup -s puma -p $PORT waiter/config.ru
+web: bundle exec ruby waiter/web.rb -p $PORT
 assets: rerun -x -p 'assets/**/*' 'bundle exec rakep'
 #specs: rerun -x -p 'public/**/*' './run_jasmine.coffee public/spec.html'

waiter/app.rb

@@ -0,0 +1,11 @@
+require 'sinatra'
+require 'redis'
+
+get '/' do
+  content_type 'text/html'
+
+  redis = Redis.new
+  project = 'travis'
+  index_key = params[:index_key] || redis.get("#{project}:index:current")
+  redis.get("#{project}:index:#{index_key}")
+end