Nightwatch (E2E) Sub-generator and Improved r.js Deploy

✨ NEW ✨

• ✨ Created omaha:nightwatch sub-generator to easily add end-to-end (E2E) browser testing support to any webapp created with yo omaha! See docs for more usage details.
• ⚡️ Webapps created with requirejs as the script bundler are now deployed without any external JavaScript dependencies as almond.js is now included in compiled webapp bundles!

A web application created with yo omaha bundled with all templates and JS dependencies into one file is about 325K (which compares well against other frameworks that do not include template files and dependencies)

🚧 Maintenance 🚧

• 💄 More spec refinements (and fewer double quotes)
• ⚠️ Updated fs-extra to version 4