A very simple port of TodoMVC (specifically based on backbone version).
Get dependencies:
$ bundle install
Run the sprockets based server for auto-compiling:
$ bundle exec rackup
Open http://localhost:9292 in the browser.
Opal comes with sprockets support built in, so using rack we can have an
easy to boot build system to handle all opal dependencies. If you look
in index.html.erb, you will see a call to javascript_include_tag
which acts just like the rails tag helper. This will include our
app.rb file, and all of its dependencies. Each file will be included
in a seperate <script>..</script> tag to make navigating the code in a
web browser easier.