Working standalone example usage script

EXAMPLE_USAGE_README.md

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+# Running the Example Usage Script
+
+This guide explains how to get the `example_usage.py` script working.
+
+## Prerequisites
+
+- Python 3.8+
+- pip
+
+## Setup Steps
+
+### 1. Install the Package
+
+```bash
+cd /path/to/drdroid-debug-toolkit
+pip install -e .
+```
+
+### 2. Create credentials.yaml
+
+Create a `credentials.yaml` file in the project root with your Grafana credentials:
+
+```yaml
+grafana:
+  id: 1
+  type: GRAFANA
+  grafana_host: "https://your-grafana-instance.grafana.net"
+  grafana_api_key: "your-grafana-api-key-here"
+  ssl_verify: "true"
+```
+
+**Note:** Replace the placeholder values with your actual Grafana host and API key.
+
+### 3. Run the Script
+
+```bash
+python example_usage.py
+```
+
+## Available Integrations
+
+The following integrations are available in the SDK registry:
+
+| Integration | Credentials Required |
+|-------------|---------------------|
+| grafana | `grafana_host`, `grafana_api_key`, `ssl_verify` |
+| signoz | `signoz_api_url`, `signoz_api_token` |
+| postgres | `host`, `user`, `password`, `database`, `port` |
+| clickhouse | `host`, `user`, `password`, `port`, `interface` |
+| cloudwatch | `region`, `aws_access_key`, `aws_secret_key` |
+| newrelic | `api_key`, `app_id`, `api_domain` |
+| posthog | `api_key`, `app_host`, `project_id` |
+| bash | `remote_host`, `remote_user`, `remote_password` or `remote_pem` |
+| kubernetes | `cluster_api_server`, `cluster_token` |
+| sql_database_connection | `connection_string` |
+
+Each integration block in `credentials.yaml` must include a `type` field matching the integration name in uppercase (e.g., `type: GRAFANA`).
+
+## Troubleshooting
+
+### Django ImproperlyConfigured Error
+
+The example script already includes Django configuration. If you see this error, ensure you're running the updated `example_usage.py`.
+
+### Module Not Found Error
+
+```bash
+pip install -e .
+```
+
+### Connection Errors
+
+- Verify your credentials in `credentials.yaml`
+- Check that your API endpoints are accessible
+- For self-signed certificates, set `ssl_verify: "false"`

credentials.yaml

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+# DrDroid SDK Credentials for Testing
+# Sentry Integration Test
+
+sentry:
+  id: 1
+  sentry_api_key: "9423mvmefm311fffff3334v"
+  sentry_org_slug: "doctor-droid"