Update client tests

README.md

@@ -1,4 +1,12 @@
-Dependencies:
+## Dependencies:
+
 - io.grpc:grpc-netty-shaded
 - io.grpc:grpc-protobuf
 - io.grpc:grpc-stub
+
+## Testing
+
+1. Download [mock servers](https://public.internetapi.cn/?dir=bdchain/test) for Transaction Ledger &
+ Accounting Chain
+2. Run mock servers with ```--port={{port}}```
+3. Run ```gradle test```