Revert "Remove duplicated instructions"

This reverts commit 7bdbaf9.

Author: afunk-anduril

README.md

@@ -9,7 +9,65 @@ The official [Anduril](https://www.anduril.com/) client library.
 
 ## Installation
 
-To install the JavaScript gRPC SDK, go to [Install JavaScript gRPC SDK](https://docs.anduril.com/sdks/javascript).
+### Authentication
+
+To authenticate with the Github package repository, you will need to generate a [personal access token](https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/managing-your-personal-access-tokens#creating-a-personal-access-token-classic). This should have at least `read:packages` scope. Please keep the token safe for the next stage of the setup procedure.
+
+### .npmrc
+Create a file in the package directory
+
+```
+@anduril:registry=https://npm.pkg.github.com
+//npm.pkg.github.com/:_authToken=<GITHUB_PERSONAL_ACCESS_TOKEN>
+```
+
+### package.json
+Create a file in the package directory
+
+```json
+{
+  "dependencies": {
+    "@anduril/anduril-javascript": "1.0.6",
+    "@connectrpc/connect-node": "1.4.0"
+  }
+}
+```
+
+## Usage
+
+Index.ts
+
+```javascript
+import { EntityManagerAPI } from "@anduril/anduril-javascript/src/anduril/entitymanager/v1/entity_manager_api.pub_connect.js";
+import { createGrpcTransport } from "@connectrpc/connect-node";
+import { createPromiseClient } from "@connectrpc/connect";
+import { Entity } from "@anduril/anduril-javascript/src/anduril/entitymanager/v1/entity.pub_pb.js";
+
+const transport = createGrpcTransport({
+  // Requests will be made to <baseUrl>/<package>.<service>/method
+  baseUrl: "https://desert-guardian.anduril.com",
+
+  // You have to tell the Node.js http API which HTTP version to use.
+  httpVersion: "2",
+
+  // Interceptors apply to all calls running through this transport.
+  interceptors: [],
+});
+
+async function main() {
+  const client = createPromiseClient(EntityManagerAPI, transport);
+  const headers = new Headers();
+  headers.set("Authorization", "Bearer <YOUR BEAERER TOKEN>");
+
+  const response = await client.getEntity(
+    { entityId: "<ENTITY ID>" },
+    { headers: headers },
+  );
+  console.log(response);
+}
+
+void main();
+```
 
 ## Support