update sample config

config.sample.py

@@ -1,6 +1,11 @@
 """Configuration file"""
 
-MESSAGE_FILE = "message.txt"
-BASIC_AUTH_FORCE = True
+# Username and password for logging in to the site
 BASIC_AUTH_USERNAME = "username"
 BASIC_AUTH_PASSWORD = "password"
+
+# List of users. First value is the full name, second the email address
+USERS = [
+    ("Foobar", "foobar@example.com"),
+    ("Barbaz", "baz@example.net")
+  ]