function onDatabase( error, db ) {
		if ( error ) {
			return done( error );
		}
		debug( 'Finished building database.' );

		debug( 'Writing file contents...' );
		write( opts.dir, opath, db, done );
	}
Callback invoked after building a README database.

@private
@param {(Error|null)} error - error object
@param {Object} db - database
@returns {void}