Update try_orc readme

samples/apps/try_orc/OAI_CONFIG_LIST_sample

@@ -0,0 +1,21 @@
+[
+    {
+        "model": "gpt-4",
+        "api_key": "<your OpenAI API key here>",
+        "tags": ["gpt-4", "tool"]
+    },
+    {
+        "model": "<your Azure OpenAI deployment name>",
+        "api_key": "<your Azure OpenAI API key here>",
+        "base_url": "<your Azure OpenAI API base here>",
+        "api_type": "azure",
+        "api_version": "2024-02-15-preview"
+    },
+    {
+        "model": "<your Azure OpenAI deployment name>",
+        "api_key": "<your Azure OpenAI API key here>",
+        "base_url": "<your Azure OpenAI API base here>",
+        "api_type": "azure",
+        "api_version": "2024-02-15-preview"
+    }
+]

samples/apps/try_orc/README.md

@@ -25,6 +25,15 @@ The application should be run in a virtual environment to ensure that its depend
 
 ### Running the Application
 
+First you need to set up your LLM keys and configuration. You can do this by
+creating a file called `OAI_CONFIG_LIST` or export an environment variable
+with the same name and content. Its basically a JSON string that defines
+various properties like model names, api keys, base urls, etc.
+
+Please see the contents of `OAI_CONFIG_LIST_sample` in this directory for an example.
+Modify it with your keys and configuration and rename it to `OAI_CONFIG_LIST`.
+
+
 Once you've installed the required packages, you can run the application with the following command:
 
 ```bash