Rails 3.1 on Heroku, TLDR Version

.Gemfile

source 'http://rubygems.org'

gem 'rails', '3.1.1'

gem 'thin'
gem 'pg'


# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '~> 3.1.4'
  gem 'coffee-rails', '~> 3.1.1'
  gem 'uglifier', '>= 1.0.3'
end

gem 'jquery-rails'

group :development, :test do
  gem 'ruby-debug19', :require => 'ruby-debug'
  gem 'heroku'
  gem 'foreman'
end

.gitignore

.bundle
db/*.sqlite3
log/*.log
tmp/
.sass-cache/
doc/api
doc/app
*.swp
*~
.DS_Store
*.log
.idea/*
config/heroku_env.rb

procfile

web: bundle exec rails server thin -p $PORT