fix instructions for building native app

nextgraph/src/local_broker.rs

@@ -257,7 +257,7 @@ pub struct WithCredentialsV0 {
     pub detach: bool, // only used if remote verifier
 }
 
-trait ISession {}
+//trait ISession {}
 
 #[derive(Debug)]
 struct RemoteSession {

ng-app/README.md

@@ -22,6 +22,7 @@ prerequisites: compile the local SDK
 ```
 cd ../ng-sdk-js
 wasm-pack build --target bundler
+npm install --no-save pkg
 cd ../ng-app
 ```