Bump gRPC version to 1.0.0 GA

Change-Id: If4220ab94394639e356ef7fca46936a28644cd73
diff --git a/incubator/protobuf-nb/pom.xml b/incubator/protobuf-nb/pom.xml
index 7919a43..e4a3608 100644
--- a/incubator/protobuf-nb/pom.xml
+++ b/incubator/protobuf-nb/pom.xml
@@ -30,7 +30,7 @@
 
     <properties>
         <protobuf.version>3.0.0</protobuf.version>
-        <grpc.version>1.0.0-pre2</grpc.version>
+        <grpc.version>1.0.0</grpc.version>
     </properties>
 
     <dependencies>