update readme for prod build

config/prod.secret.exs.template

@@ -24,3 +24,17 @@ config :myapp, MyApp.Repo,
 config :myapp, MyApp.Guardian,
       issuer: "myapp",
       secret_key: "secret"
+
+config :myapp,
+  bnet_client_id: "",
+  bnet_client_secret: "",
+  bnet_redirect_uri: "",
+
+  # admin login credentials for site
+  admin_accounts: [%{
+    "username" => "",
+    "password" => "",
+    "character_name" => "",
+    "character_avatar" => "",
+    "permissions" => ""
+  }]