title: Getting 'choice' to work in Highline Ruby Gem without error and getting variable from it
body: <p>I'm having a couple of problems using Highline in Ruby, and trying to get the choice element, <a href="http://highline.rubyforge.org/svn/trunk/highline/examples/menus.rb" rel="nofollow noreferrer">detailed here</a>, to work. </p>
  
  <ol>
  <li>At the moment the following code produces the error 
  "error: wrong number of arguments (0 for 1). Use --trace to view backtrace"</li>
  <li>How do I get the variable out of choice? At the moment I have the 'do' setup, but I have no idea about how to get the variable the user has chosen out and into a variable for use elsewhere.</li>
  </ol>
  
  <p>Sorry if this is a bit beginner, I'm brand new to ruby and this is my first project, in at the deep end.</p>
  
  <p>Thanks in advance.</p>
  
  <pre><code>if agree("Are these files going to be part of a set? ") 
        set_title = ask("Title: ")
        set_desc = ask("Description:")
        set_genre = ask("Genre: ")
        set_label = ask("Record Label: ")
        set_date = ask_for_date("Release Date (yy-mm-dd): ")
        set_label = ask("EAN/UPC: ")
        set_buy = ask("Buy this set link: ")
        set_tags = ask_for_array("Tags (seperated by space): ")
  
        # Sort out license
        choose do |menu|
          menu.prompt = "Please choose the license for this set?  "
  
          menu.choices(:all_rights_reserved, :cc_by) do 
            # put the stuff in a variable
          end
        end
      end # End setup set
  </code></pre>