class Gem::Commands::BuildCommand

def description # :nodoc:
  <<-EOF
e build command allows you to create a gem from a ruby gemspec.
e best way to build a gem is to use a Rakefile and the Gem::PackageTask
ich ships with RubyGems.
e gemspec can either be created by hand or extracted from an existing gem
th gem spec:
$ gem unpack my_gem-1.0.gem
Unpacked gem: '.../my_gem-1.0'
$ gem spec my_gem-1.0.gem --ruby > my_gem-1.0/my_gem-1.0.gemspec
$ cd my_gem-1.0
[edit gem contents]
$ gem build my_gem-1.0.gemspec
  EOF
end