old_contents: #! /usr/bin/env node
  
  var yargs = require('yargs');
  var config = require('../src/config');
  var presidium = require('../src/presidium');
  var version = require('../src/version');
  var conf = config.load('_config.yml');
  
  var argv = yargs.usage('$0 command')
      .command('requirements', 'Install jekyll gems and npm dependencies', function (yargs) {
          presidium.requirements(conf);
      })
      .command('clean', 'Clean build directory', function (yargs) {
          presidium.clean(conf);
      })
      .command('install', 'Install jekyll gems and npm dependencies', function (yargs) {
          presidium.install(conf);
      })
      .command('generate', 'Generate site sources', function (yargs) {
          presidium.generate(conf);
      })
      .command('build', 'Build site', function (yargs) {
          presidium.generate(conf);
          presidium.build(conf);
      })
      .command('validate', 'Validate generated site', function (yargs) {
          presidium.validate(conf)
      })
      .command('watch', 'Watch for content and media updates', function (yargs) {
          presidium.watch(conf)
      })
      .command('develop', 'Watch presidium sources (for development)', function (yargs) {
          presidium.develop(conf)
      })
      .command('serve', 'Serve site', function (yargs) {
          presidium.serve(conf);
      })
      .command('start', 'Build and serve', function (yargs) {
          presidium.clean(conf);
          presidium.generate(conf);
          presidium.watch(conf);
          presidium.serve(conf);
      })
      .command('clean-gh-pages', 'Remove old versions.', function (yargs) {
          return yargs.alias('v', 'version')
              .describe('v', 'Semantic version number you wish to delete.')
              .demand('v', 'You must supply a version to delete.')
              .string('v');
      }, function (argv) {
          version.clean(argv['v'], conf);
      })
      .command('gh-pages', 'Publish to Github Pages', function (yargs) {
          return yargs.alias('v', 'version')
              .describe('v', 'Semantic version number to publish with. \n If omitted, it defaults to publishing "latest".')
              .string('v');
      }, function (argv) {
          conf = config.load('_config.yml', yargs.argv['v'] || '');
          presidium.clean(conf);
          presidium.generate(conf);
          version.init(conf);
          presidium.build(conf);
          presidium.ghPages(conf);
      })
      .demand(1, 'must provide a valid command')
      .help('h').alias('h', 'help')
      .argv;
new_contents: #! /usr/bin/env node
  
  var yargs = require('yargs');
  var config = require('../src/config');
  var presidium = require('../src/presidium');
  var version = require('../src/version');
  var conf = config.load('_config.yml');
  
  var argv = yargs.usage('$0 command')
      .command('requirements', 'Install jekyll gems and npm dependencies', function (yargs) {
          presidium.requirements(conf);
      })
      .command('clean', 'Clean build directory', function (yargs) {
          presidium.clean(conf);
      })
      .command('install', 'Install jekyll gems and npm dependencies', function (yargs) {
          presidium.install(conf);
      })
      .command('generate', 'Generate site sources', function (yargs) {
          presidium.generate(conf);
      })
      .command('build', 'Build site', function (yargs) {
          presidium.generate(conf);
          presidium.build(conf);
      })
      .command('validate', 'Validate generated site', function (yargs) {
          presidium.validate(conf)
      })
      .command('watch', 'Watch for content and media updates', function (yargs) {
          presidium.watch(conf)
      })
      .command('develop', 'Watch presidium sources (for development)', function (yargs) {
          presidium.develop(conf)
      })
      .command('serve', 'Serve site', function (yargs) {
          presidium.serve(conf);
      })
      .command('start', 'Build and serve', function (yargs) {
          presidium.clean(conf);
          presidium.generate(conf);
          presidium.watch(conf);
          presidium.serve(conf);
      })
      .command('clean-gh-pages', 'Remove old versions.', function (yargs) {
          return yargs
              .alias('v', 'version')
              .describe('v', 'Semantic version number you wish to delete.')
              .demand('v', 'You must supply a version to delete.')
              .string('v');
      }, function (argv) {
          version.clean(argv['v'], conf);
      })
      .command('gh-pages', 'Publish to Github Pages', function (yargs) {
          return yargs
              .alias('v', 'version')
              .describe('v', 'Semantic version number to publish with. \n If omitted, it defaults to publishing "latest".')
              .string('v');
      }, function (argv) {
          conf = config.load('_config.yml', yargs.argv['v'] || '');
          presidium.clean(conf);
          presidium.generate(conf);
          version.init(conf);
          presidium.build(conf);
          presidium.ghPages(conf);
      })
      .demand(1, 'must provide a valid command')
      .help('h').alias('h', 'help')
      .argv;
subject: Tidy up.