Document pl node features on patternlab.io

[bmuenzenmeyer]

Review and reconcile https://github.com/pattern-lab/website/tree/dev/patternlabsite/docs with current version of software

• advanced-auto-regenerate.md
• advanced-clean-public.md
• advanced-config-options.md
• advanced-exporting-patterns.md
• advanced-generating-css.md Not implemented
• advanced-integration-with-compass.md Not implemented
• advanced-integration-with-grunt.md Not applicable. PL Node uses Grunt or Gulp as foundational portions
• advanced-keyboard-shortcuts.md
• advanced-page-follow.md
• advanced-pattern-lab-nav.md
• advanced-reload-browser.md
• command-line.md
• command-prompt-windows.md Not applicable
• data-json-mustache.md
• data-link-variable.md
• data-listitems.md
• data-pattern-specific.md
• editing-source-files.md
• first-run.md
• index.html
• installation.md
• pattern-add-new.md
• pattern-adding-annotations.md - identical, no references
• pattern-converting.md - looks like a dead file
• pattern-header-footer.md
• pattern-hiding.md - identical, no references
• pattern-including.md
• pattern-linking.md
• pattern-managing-assets.md
• pattern-mobile-view.md - not implemented
• pattern-organization.md
• pattern-parameters.md
• pattern-pseudo-patterns.md
• pattern-reorganizing.md
• pattern-states.md
• pattern-stylemodifier.md
• requirements.md
• upgrading.md

NEW THINGS

• Grunt vs Gulp - added to install.md