anchor.diff:  Todo.new.interface.run
   ```
   
  +### Splitting up the Assembly configuration
  +
  +As a project grows, it's helpful to be able to split out
  +parts of the Assembly configuration into multiple files.
  +
  +This can be accomplished with the `load` method in the DSL,
  +which will load the named file and add it the elements
  +defined in it as a group in the assembly.
  +
  +For example, it's common to split out application settings into
  +a separate config file.
  +
  +.config/settings.rb
  +```ruby
  +Alki do
  + set(:home) { ENV['HOME'] }
  + set(:db_path) { ENV['TODO_DB_PATH'] || File.join(home,'.todo_db') }
  + set :prompt, 'todo> '
  +end
  +```
  +
  +.config/assembly.rb
  +```ruby
  +Alki do
  +  load :settings
  +
  +  service :interface do
  +    require 'todo/readline_interface'
  +    Todo::ReadlineInterface.new settings.prompt, handler
  +  end
  +
  +  ...
  +end
  +```
  +
   ## Further Documentation
   
  -Further documentation can be found https://github.com/alki-project/alki/blob/master/doc/index.adoc[here]
  +Further documentation can be found at http://alki.io[alki.io].
   
   Example projects can be found https://github.com/alki-project/alki-examples[here]
   
  
positive.code: ### Creating an executable
  
  Read more about creating executables with Alki
  https://github.com/alki-project/alki/blob/master/doc/executables.adoc[here]
  
  In the todo example, it's a CLI utility so it requires an executable.
  
  .exe/todo
  ```ruby
  
negative.code: 
  ### Defining Elements
  
  Adding things to the assembly requires an assembly definition file. By convention this is
  named `config/assembly.rb` and is built using a simple DSL. There are
  a handful of different element types in Assemblies. Below are a few of the
  most common. Full documentation of the DSL can be found at http://alki.io[alki.io].
  
  Elements can refer to other elements, and can be defined in any order.
  
  .config/assembly.rb
  ```ruby
  Alki do
    group :settings do <1>
      set(:home) { ENV['HOME'] } <2>
      set(:db_path) { ENV['TODO_DB_PATH'] || File.join(home,'.todo_db') }
      set :prompt, 'todo> '
    end
  
  