Added install instructions

README.md

@@ -1,2 +1,21 @@
 # bookingapp
 Booking App
+
+Install instructions
+
+secrets.php:
+1. set default_admin_user
+2. set default_admin_password
+3. set token_secret    
+4. set google secret key for recaptcha
+
+db.php:
+1. set dbuser
+2. set dbpassword
+3. set dbname
+
+register.html
+1. set google site key for recaptcha
+
+tokens.php
+1. set timezone