Some earlier refactoring prevented the watchr script from running in
the source tree. There was also a Windows issue where running architect
didn't preserve symlinks causing the app to not be served.
Rather than hard coding excludes into the dgeni config,
use the fact that we are already ignoring the boilerplate
and generated files via the .gitignore file.
This is to tidy up the `author-packagse`, which currently duplicates a
lot of the configuration in the main packages. We need to
DRY this up so that we don't fall foul of a change in one being missed in
the other.
