docs: add nextcloud credentials instructions

README.md

@@ -46,7 +46,15 @@ This is free and easy, following these instructions;
 
 ### Nextcloud Credentials
 
-TODO
+To authenticate with Nextcloud Deck, you'll need to obtain the necessary credentials:
+
+1. Log in to your Nextcloud instance
+2. Go to Settings > Security
+3. Under the "App passwords / devices" section, create a new app password
+4. Enter a name for the device (e.g., "Trello to Deck")
+5. Click "Create new app password"
+6. Copy the generated username and password
+7. Add these credentials to your `trello-to-deck.toml` file
 
 ### Verify configuration
 
@@ -58,7 +66,7 @@ trello-to-deck check
 
 ## Development
 
-As part of building the import server, I'm including the following commands the exercise each operation invovled.
+As part of building the import server, the following commands exercise each operation involved:
 
 - [x] trello member get - includes list of boards
 - [x] trello board get - includes list of stacks