anchor.diff:  - *asciidoctor-extensions.js* (extensions API only)
   - *asciidoctor-all.js* (core, extension and Opal)
   
  -* *dist/npm* (to use with npm)
  +* *dist/NPM* (to use with NPM)
   - *asciidoctor-core.js* (no extensions API)
   - *asciidoctor-extensions.js* (extensions API only)
   
   Each file has a +minified+ and +gz+ version.
  -
  -You need to load both files into your JavaScript environment to use Asciidoctor.
  -For instance, in an HTML page, add these two +<script>+ tags (ideally at the bottom of the page):
  -
  -[source,html]
  -----
  -<script src="opal.js"></script>
  -<script src="asciidoctor.js"></script>
  -----
   
   You'll see these scripts in action when you run the examples, described next.
   
  
positive.code: 
  If you choose, you may use the Asciidoctor class that Opal generates directly from Ruby.
  
  All Opal-compiled classes are stored under the Opal namespace.
  Ruby variables and methods on a class or object get prefixed with +$+.
  Thus, where you would execute +Asciidoctor.render+ in Ruby, you execute +Opal.Asciidoctor.$render+ in JavaScript.
  
negative.code: To make the update persistent, run +git commit+ afterwards.
  ====
  
  Next, switch to the 'asciidoctor.js' directory and run NPM's +install+ command and Bower's +install+ command:
  
   $ cd asciidoctor.js
   $ NPM install
   $ bower install
  
  You're now ready to build asciidoctor.js.
  