Railscasts Episode #135: Making a Gem
 
http://railscasts.com/episodes/135
 
Commands
 
  sudo gem install echoe
  mkdir -p uniquify/lib
  touch README.rdoc Rakefile lib/uniquify.rb
  rake -T
  rake manifest
  rake install
  rake build_gemspec
  git init
  git add .
  git commit -m "initial commit"
  git remote add origin git@github.com:ryanb/uniquify.git
  git push
  touch CHANGELOG
  touch init.rb