if ARGV[0]
  ENV["RAILS_PKG_DESTINATION"] = File.expand_path(ARGV[0])
  if RUBY_PLATFORM =~ /mswin32/
    Dir.chdir File.dirname(__FILE__)
    system %{rake.cmd fresh_gem_rails}
  else
    system %{ cd #{File.dirname(__FILE__)}; rake fresh_gem_rails }
  end
else
  puts <<-HELP

NAME
     rails - creates a new Rails installation 

SYNOPSIS
     rails [full path]

DESCRIPTION
     This generator will create a suggested directory structure, lots of minor helper
     files, and a default configuration for creating a new Rails application. Once the
     generator is done, you're adviced to look at the README in the root of the folder.
     
EXAMPLE
     rails ~/Code/Ruby/weblog
     
     This will generate a new Rails installation in the ~/Code/Ruby/weblog folder.
HELP
end