Updated dependencies
Fixed invalid input bug
Added Windows compatibility to tests
Throw a 404 exception when trying to read a directory that doesn't exist.
Display metadata in the index listing
Fixed tests to expect parsed templates to contain json-encoded slashes
Added breadcrumb navigation
No longer list directories that don't have a metadata.json in them.  Added some DirectoryScan tests.
Don't list boxes as sub-directories unless they contain nested boxes.
Show metadata output in a more readable format
Updated README
Merge branch 'develop'