Created index.js to serve as the main application bootstrap
Removed compiled files and moved source files to lib directory

- The images, Sass files, and HTML utilities will now be part of the project's component library. Compiled files are no longer part of the mailgen application, and will exist only in the email projects themselves
Updated the project name in package.json

- The discrepancy between the project name "dfa-emails" and the command line tool being called "mailgen" was causing some issues, so renamed the project to match to tool for now
Created a submodule for scaffolding new emails

- The Scaffold submodule can create a directory structure for new emails
Updated the Scaffold module pattern

- Made some tweaks to the structure of the Scaffold submodule to allow easier dependency injection and logic encapsulation
Added a basic email template and updated Scaffold to copy it

- Created a templates directory and added a basic HTML template file

- Updated Scaffold to copy the basic template when creating a new email directory structure. Eventually this will be expanded to accept arbitrary templates
Started to restructure the application using Commander

- Using the Commander module removes the need to reïnvent the wheel and develop a custom command-parsing system. It also automatically generates command-line documentation via --help. See project page: https://www.npmjs.org/package/commander