Update Node examples and example documentation
diff --git a/examples/node/greeter_client.js b/examples/node/greeter_client.js
index 9b4b0a7..ca57815 100644
--- a/examples/node/greeter_client.js
+++ b/examples/node/greeter_client.js
@@ -31,7 +31,7 @@
  *
  */
 
-var PROTO_PATH = __dirname + '/helloworld.proto';
+var PROTO_PATH = __dirname + '/../protos/helloworld.proto';
 
 var grpc = require('grpc');
 var hello_proto = grpc.load(PROTO_PATH).helloworld;