using #camelize instead of #capitalize on SaniRequest::Parseable

to support more complex model names
sidekiq support for Phusion passenger
bump sidekiq version
refactored pusher initializer

added BandangoPusher and LocalEnvironment. refactored pusher
initialiser so that it doesn’t schedule tasks if sidekiq invokes it.
quotes
added sidekiq configuration file

**Important:** RaspberryPi configuration-only
deprecated in favor of using foreman + upstart