old_contents: #!/usr/bin/env node
  
  'use strict';
  
  var pkg   = require('../package.json');
  
  var docopt = require('docopt').docopt;
  var updateNotifier = require('update-notifier');
  
  updateNotifier({ pkg }).notify();
  
  var doc = `
  usage: collider [--version] [--help] <command> [<args>...]
  
  options:
    -h, --help  Show help information.
    --version   Show program version.
  
  commands:
    run       Run the current project.
    new       Create a new project in the current directory.
    matter    Manage Matter libraries in the current project.
    generate  Generate skeleton Matter within the current project.
    help      Show help information.
  
  See 'collider help <command>' for more information on a specific command.
  `;
  
  var args = docopt(doc, {
    version: `Collider CLI ${pkg.version}`,
    options_first: true,
  });
  
  var cmd  = args['<command>'];
  var argv = [cmd].concat(args['<args>']);
  
  switch(cmd) {
    case 'run':
      require('../lib/commands/run')(argv);
      break;
    case 'new':
      require('../lib/commands/new')(argv);
      break;
    default:
      console.error(`"${cmd}" is not a collider command. See 'collider --help'.`)
  }
  
new_contents: #!/usr/bin/env node
  
  'use strict';
  
  var pkg   = require('../package.json');
  
  var docopt = require('docopt').docopt;
  var updateNotifier = require('update-notifier');
  
  updateNotifier({ pkg }).notify();
  
  var doc = `
  usage: collider [--version] [--help] <command> [<args>...]
  
  options:
    -h, --help  Show help information.
    --version   Show program version.
  
  commands:
    run       Run the current project.
    new       Create a new project in the current directory.
    matter    Manage Matter libraries in the current project.
    generate  Generate skeleton Matter within the current project.
    help      Show help information.
  
  See 'collider help <command>' for more information on a specific command.
  `;
  
  var args = docopt(doc, {
    version: `Collider CLI ${pkg.version}`,
    options_first: true,
  });
  
  var cmd  = args['<command>'];
  var argv = [cmd].concat(args['<args>']);
  
  switch(cmd) {
    case 'run':
      require('../lib/commands/run')(argv);
      break;
    case 'new':
      require('../lib/commands/new')(argv);
      break;
    case 'matter':
      require('../lib/commands/matter')(argv);
      break;
    case 'generate':
      require('../lib/commands/generate')(argv);
      break;
    case 'help':
      require('../lib/commands/help')(argv);
      break;
    default:
      console.error(`"${cmd}" is not a collider command. See 'collider --help'.`)
  }
  
subject: Add matter, generate and help commands to switch