Added setup instructions

Author: nicoverbruggen

SETUP_INSTRUCTIONS.md

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+# Set up hyperRail
+
+## Step 0: Requirements
+
+* PHP 5.3+ for Laravel project
+* PHP 5.4+ for Way/Generators, if you have 5.4+ you can uncomment Way/Generators in /app/config/app.php
+* Apache
+
+## Step 1: Install dependencies
+
+This is Laravel. You know the drill, run `composer update`.
+
+## Step 2: Update bootstrap/start.php for environments
+
+Optional, but can be useful.
+
+## Step 3: Set up hostname
+
+In /app/config/app.php set the following to your personal hostname/preferences:
+
+	'url' => 'http://irail.dev',    // with http
+   	'url-short' => 'irail.dev',     // without http
+
+## Step 4: You're ready!
+
+Usually you should be ready to get started by visiting the hostname you set up.