authorize: add a note about the defaults

lib/tugboat/middleware/ask_for_credentials.rb

@@ -10,10 +10,14 @@ def call(env)
         ssh_key_path = ask "Enter your SSH key path (optional, defaults to ~/.ssh/id_rsa):"
         ssh_user = ask "Enter your SSH user (optional, defaults to #{ENV['USER']}):"
         ssh_port = ask "Enter your SSH port number (optional, defaults to 22):"
-        region   = ask "Enter your default region (optional, defaults to 1 (New York)):"
-        image    = ask "Enter your default image (optional, defaults to 284203 (Ubuntu 12.04 x64)):"
-        size     = ask "Enter your default size  (optional, defaults to 66 (512MB)):"
-        ssh_key  = ask "Enter your default ssh key (optional, defaults to none):"
+        say
+        say "To retrieve region, image, size and key ID's, you can use the corresponding tugboat command, such as `tugboat images`."
+        say "Defaults can be changed at any time in your ~/.tugboat configuration file."
+        say
+        region   = ask "Enter your default region ID (optional, defaults to 1 (New York)):"
+        image    = ask "Enter your default image ID (optional, defaults to 284203 (Ubuntu 12.04 x64)):"
+        size     = ask "Enter your default size ID (optional, defaults to 66 (512MB)):"
+        ssh_key  = ask "Enter your default ssh key ID (optional, defaults to none):"
 
         # Write the config file.
         env['config'].create_config_file(client_key, api_key, ssh_key_path, ssh_user, ssh_port, region, image, size, ssh_key)