app.rb

require 'rubygems'
require 'blather/client'

setup ENV['JID'], ENV['JPASSWORD']

# Auto approve subscription requests
subscription :request? do |s|
  write_to_stream s.approve!
end

# Echo back what was said
message :chat?, :body do |m|
  say m.from, "You said: #{m.body}"
end

Gemfile

source 'http://rubygems.org'

gem 'blather'
gem 'foreman'

gistfile1.txt

{10:55}[ruby-1.9.2]~/Desktop/blather-heroku@master✗✗✗ ben% heroku config:add [email protected] JPASSWORD=somepassword
Adding config vars:
  JID       => [email protected]
  JPASSWORD => somepassword
Restarting app... done, v3.

Procfile

bot: bundle exec ruby app.rb -D