Fix the 'scripts' option in package.json's "testling" section.

Inside getHTML there's a `bundle === undefined` test; since a package.json
which used the 'scripts' option wasn't setting bundle, HTML generation was
being (infinitely) deferred.
Fix the --html option, when used in conjunction with "scripts".

The "scripts" option requires the unglob() callback to run.  It was
being executed too soon, so the `scripts` variable wasn't populated
when getHTML was called.
1.5.3