Update readme (#8)

README.md

@@ -33,7 +33,7 @@ The following steps will allow you to deploy the connector and use it in a Hasur
   1.  The easiest option is to is to run the connector locally in config mode:
   ```
   cargo run -- configuration serve --port 5000
-  curl -X POST -d '{"connection": {"username": "your_username", "password": "your_password", "url": "your_clickhouse_url"}, "tables": []}' http://localhost:5000 > clickhouse.connector.configuration.json
+  curl -X POST -H 'Content-Type: application/json' -d '{"connection": {"username": "your_username", "password": "your_password", "url": "your_clickhouse_url"}, "tables": []}' http://localhost:5000 > clickhouse.connector.configuration.json
   ```
   2.  The other option is to manually write your config that follows this pattern:
   ```
@@ -67,8 +67,17 @@ The following steps will allow you to deploy the connector and use it in a Hasur
   --github-repo-url https://github.com/hasura/ndc-clickhouse/tree/main \
   --config-file ./clickhouse.connector.configuration.json
   ```
-- Ensure that your deployed connector is referenced from your metadata with the service token
-- Edit your metadata using the LSP support to import the defined schema, functions, procedures
+- Ensure that your deployed connector is referenced from your metadata with the service token. This can be done by adding a new file under `subgraphs/<YOUR_SUBGRAPH_DIR>/dataconnectors` with the following: 
+
+```
+kind: DataConnector
+version: v1
+definition:
+  name: clickhouse
+  url:
+    singleUrl: <DEPLOYED_CONNECTOR_URL>
+```
+- Edit your metadata using the [LSP](https://marketplace.visualstudio.com/items?itemName=HasuraHQ.hasura) support to import the defined schema by running the comamnd `Hasura: Refresh Data Connector`. You can also track functions and procedures using the LSP command `Hasura: Track All`. 
 - Deploy or update your Hasura cloud project
   ```
   hasura3 cloud build create --project-id my-project-id \