Renames variable

Config.php

		class Config {
		public const SITE_TITLE = "Dave Jarvis' Repositories";
		- private const REPOS_SUBDIR = '/repos';
		- private const ORDER_FILE = __DIR__ . '/order.txt';
		+ private const REPOS_DIR = '/repos';
		+ private const ORDER_FILE = '/order.txt';
		private const LOG_FILE = '/error.log';



		public function createRouter() {
		- return new Router(
		- $this->getHomeDirectory() . self::REPOS_SUBDIR,
		- self::ORDER_FILE
		- );
		+ $repos = $this->getHomeDirectory() . self::REPOS_DIR;
		+
		+ return new Router( $repos, $repos . ORDER_FILE );
		}

INSTALL.md

		1. Edit `${WEBDIR}/${REPO}/Config.php`.
		1. Set `SITE_TITLE`.
		-1. Set `REPOS_SUBDIR`.
		+1. Set `REPOS_DIR`.
		1. Save the file.
		-1. Edit `${WEBDIR}/${REPO}/order.txt`
		+1. Edit `<REPOS_DIR>/order.txt`
		1. List repositories in the order they must appear.
		1. Hide repositories using a hyphen prefix.

Delta	7 lines added, 8 lines removed, 1-line decrease