function onRead( error, files ) {
		if ( error ) {
			return done( error );
		}
		debug( 'Finished reading files.' );

		debug( 'Rendering file contents...' );
		render( files, opts.base, done );
	}
Callback invoked upon reading a list of files.

@private
@param {(Error|null)} error - error object
@param {(EmptyArray|ObjectArray)} files - file contents
@returns {void}