specify ruby version in gemfile for heroku
tryed resolving loofah related error by using feedzirra  0.2.0.rc2
added Procfile, and .env to gitignore
added new relic, updated Procfile with sidekiq and unicorn, set logging in application.rb, modified convenience shellscripts to use unicorn, defined rake task for unicorn to start.
added sidekiq initializer for autoscaling on heroku
tweaked initializers to to match heroku's redis-nano connection limiations
fixed sidekiq.yml file not to try and save a pid file on heroku
upgraded gemset to ruby 2.0.0-head
fixed sidekiq.yml file by putting the pid file path into development group that heroku didn't like.