Don't allow files in hidden directories to be served
Use .single() option for schema
Merge pull request #12 from kanongil/hide-fix

Don't allow files in hidden directories to be served
Merge pull request #14 from kanongil/joi-usage

Use .single() option for directory settings schema
Merge remote-tracking branch 'upstream/master' into moreFlexibleIndexOption

Conflicts:
	lib/directory.js
	test/directory.js