Update development.md

docs/development.md

@@ -10,6 +10,10 @@ In a new directory, clone the repo using:
 
 ```git clone https://github.com/hasura/ndc-duckdb```
 
+Install npm packages, go into the `ndc-duckdb` repo and run:
+
+```npm install```
+
 ### Run the Introspection
 
 If you are working with a local database file, place the file in the root of the ndc-duckdb directory. 
@@ -55,4 +59,4 @@ Do a local supergraph build:
 
 Mutations and Queries will now be issued against your locally running connector instance. 
 
-Depending on the changes made to the connector, you may need to re-generate the config. The best way to do this is to regenerate the config locally then move that config into the supergraph.
+Depending on the changes made to the connector, you may need to re-generate the config. The best way to do this is to regenerate the config locally then move that config into the supergraph.