Update metadata example to use local package instead of pip install

Co-Authored-By: Aaron de Mello <[email protected]>

examples/metadata_field_demo/README.md

@@ -13,20 +13,26 @@ This example demonstrates how to use metadata fields when creating drafts and se
 
 1. A Nylas account with API access
 2. Python 3.x installed
-3. The Nylas Python SDK installed (`pip install nylas`)
+3. Local installation of the Nylas Python SDK (this repository)
 
 ## Setup
 
-1. Set your environment variables:
+1. Install the SDK in development mode from the repository root:
+```bash
+cd /path/to/nylas-python
+pip install -e .
+```
+
+2. Set your environment variables:
 ```bash
 export NYLAS_API_KEY="your_api_key"
 export NYLAS_GRANT_ID="your_grant_id"
 export TEST_EMAIL="[email protected]"  # Optional
 ```
 
-2. Run the example:
+3. Run the example from the repository root:
 ```bash
-python metadata_example.py
+python examples/metadata_field_demo/metadata_example.py
 ```
 
 ## Example Output

examples/metadata_field_demo/metadata_example.py

@@ -11,15 +11,22 @@
     TEST_EMAIL: Email address for sending test messages (optional)
 
 Usage:
+    First, install the SDK in development mode:
+    cd /path/to/nylas-python
+    pip install -e .
+
+    Then set environment variables and run:
     export NYLAS_API_KEY="your_api_key"
     export NYLAS_GRANT_ID="your_grant_id"
     export TEST_EMAIL="[email protected]"
-    python metadata_example.py
+    python examples/metadata_field_demo/metadata_example.py
 """
 
 import os
 import sys
 from typing import Dict, Any, Optional
+
+# Import from local nylas package
 from nylas import Client
 from nylas.models.errors import NylasAPIError