Version bump to 0.12.0. Updating proto for release. Added components for the sample to work and updated README.

Author: pkedy

README.md

@@ -44,7 +44,7 @@ npm install
 ```
 
 ```bash
-dapr run --app-protocol grpc --dapr-grpc-port=50001 node app.js
+dapr run --app-protocol grpc --dapr-grpc-port=50001 node app.js --components-path ./components
 ```
 
 ### Generate gRPC interface and proto buf stubs