docs: Update README.md (#174)

* docs: Update README.md

Added export specification

* Update README.md

* Update README.md

Export moved into Consume Section

README.md

@@ -20,9 +20,6 @@ Find the right API, fast from your organization's hand-crafted API catalog with
 
 ![tree-view](./media/tree-view.png)
 
-Try our new integration with GitHub Copilot Chat to find APIs based on semantic search query.
-
-![chat-agent](./media/chat-agent.gif)
 
 ### Explore
 
@@ -40,11 +37,11 @@ Generate API SDK clients for your favorite language including JavaScript, TypeSc
 
 ![generate-api-client](./media/generate-api-client.png)
 
-## Notice/Known Issues
+Export API specification document for a specific API either from the tree view or from the command palette
+
+![Export API specification](./media/export-api.gif)
+
 
-- Contents in VS Code workspace are not sent to GitHub Copilot.
-- When the content of single spec is very large, the `@apicenter` agent may fail as the token limit of GitHub Copilot Chat is exceeded. This is a temporary limitation our team is working to remove.
-- When the number of selected Azure Subscription is larger then 10, `@apicenter` agent may fail as it reaches call limit of Azure REST APIs.
 
 ## Contributing