Rename user config (#18)

- Update installation instructions

src/user-config.dist.php

@@ -0,0 +1,27 @@
+<?php
+/**
+ * USER CONFIGURATION ITEMS
+ *
+ * Editing the values here customizes the behavior of Feed Reader Central
+ *
+ * On initial installation, rename this file to user-config.php and configure it as desired
+ */
+
+
+/**
+ * Which security model should the application use? Options are:
+ * - Security::SINGLE_USER (no e-mail required, does not require a password)
+ * - Security::SINGLE_USER_WITH_PASSWORD (no e-mail required, does require a password)
+ * - Security::MULTI_USER (e-mail and password required for all users)
+ */
+const SECURITY_MODEL = 'CONFIGURE_ME';
+
+/** The name of the database file where users and feeds should be kept */
+const DATABASE_NAME = 'frc.db';
+
+/**
+ * The format for date/time outputs; see https://www.php.net/manual/en/datetime.format.php for acceptable values
+ *
+ * The default, 'F j, Y \a\t g:ia', equates to "August 17, 2023 at 4:45pm"
+ */
+const DATE_TIME_FORMAT = 'F j, Y \a\t g:ia';