function onResults( error, results ) {
		if ( error ) {
			debug( 'Encountered an error when analyzing files: %s', error.message );
			return done( error );
		}
		debug( 'Successfully analyzed files.' );
		done( null, results );
	}
Callback invoked upon analyzing a file list.

@private
@param {(Error|null)} error - error object
@param {(Object|ObjectArray)} results - analysis results
@returns {void}