Merge pull request publify#206 from antonfefilov/patch-1

Update Gemfile.heroku with 'twitter' gem dependency

Gemfile.heroku

@@ -23,6 +23,7 @@ gem 'fog'
 gem 'recaptcha', :require => 'recaptcha/rails', :branch => 'rails3'
 gem 'carrierwave'
 gem 'akismet', '~> 1.0'
+gem 'twitter'
 
 gem 'prototype-rails', '~> 3.2.1'
 gem 'prototype_legacy_helper', '0.0.0', :git => 'http://github.com/rails/prototype_legacy_helper.git'
@@ -41,4 +42,4 @@ end
 # Install gems from each theme
 Dir.glob(File.join(File.dirname(__FILE__), 'themes', '**', "Gemfile")) do |gemfile|
   eval(IO.read(gemfile), binding)
-end
+end