Change project architecture

* Move all the H5BP source files into the `src/` directory and remove
  all external components that can be fetch via `npm`, namely: the
  Apache Server Configs, jQuery, and Normalize.css.

* Add `package.json`, and move to using `npm` for managing dependencies
  (for more information about `npm`, see: https://www.npmjs.org/doc/).

* Add `gulp` based build script to allows us to automatically create
  the distribution files as well as an archive that can then be attached
  to the release - https://github.com/blog/1547-release-your-software
  (for more information about gulp, see: http://gulpjs.com/).

* Add other miscellaneous files to help us in our development process:

   * `.editorconfig` - to define and maintain consistent coding styles
                       http://editorconfig.org/

   * `.jshintrc`     - to specify JSHint configuration options
                       http://www.jshint.com/docs/

   * `.travis.yml`   - to specify Travis CI configuration options
                       http://docs.travis-ci.com/

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These changes:

  * automate some of the tedious work (e.g.: updating the external
    components, updating some of the inline content such as version
    numbers, etc.)

  * will allow us to experiment more (e.g.: allow us to create different
    builds of H5BP, builds that can contain different components)

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Ref h5bp/html5-boilerplate#1563
Close h5bp/html5-boilerplate#1563
Add `dist/` directory

The `dist/` directory is added in order to allow even less experienced
users (users that may not want to deal with the build script) to get
the latest changes, namely, what is in the `master` branch, but is not
yet released.
Add badges

* Add Travis CI status icon.
  http://docs.travis-ci.com/user/status-images/

* Add `devDependencies` status icon.
  https://david-dm.org/