Starting to refactor
Work with ENV variables for all settings, if available
Put sinatra-contrib in Gemfile, idiot
Fix reading of ENV variables
Update rubygems source
Fix rubygems source
Specify Ruby 1.9.3
Fix sample
Fix template
Rename template
Update /validate_config/ to make it similar to Hello World example
Tweak the push methods
Add count of subscribed/unsubscribed
Remember about Ruby's lack of increment operators
Make greeting appear on pushed template
Update readme and config example
Pull in publisher class
Remove publisher class