Switched to NPM instead of yarn

.gitignore

@@ -7,3 +7,4 @@
 node_modules
 .idea
 architect_services
+oclif.manifest.json

README.md

@@ -100,25 +100,35 @@ _See code: [src/commands/start.ts](https://github.com/snappi/architect-cli/blob/
 <!-- commandsstop -->
 
 # Demo
-Install architect via yarn
+
+* [Install GRPC and Protoc](https://github.com/grpc/grpc/blob/master/BUILDING.md#pre-requisites)
+* [Make sure you have node JS installed](https://nodejs.org/en/download/package-manager/)
+* The demo includes javascript services, which means we'll need the node plugins for grpc and protobuf
+```
+$ npm install -g yarn
+$ yarn global add grpc
+$ yarn global add google-protobuf
+```
+
+* Install architect via yarn
 ```
 $ yarn global add @snappi/architect
 ```
 
-Clone the demo project
+* Clone the demo project
 ```
 $ git clone git@github.com:snappi/calculator-service-demo.git
 $ cd calculator-service-demo/test-service
 ```
 
-Install the client stubs for the test script and its dependencies
+* Install the client stubs for the test script and its dependencies
 ```
 $ architect install --recursive
 ```
 
-Start the test service
+* Start the test service
 ```
 $ architect start
 ```
 
-Done!
+* Done!