Update ProtoBuf 3 & gRPC

- Protocol Buffers: 3.0.0
- gRPC: 1.0.0-pre2

Change-Id: Ic80d3f660d4a0aa37a99d4e6d4dc45e0b70b073b
diff --git a/apps/kafka-integration/web/pom.xml b/apps/kafka-integration/web/pom.xml
index e38332f..3dcd937 100644
--- a/apps/kafka-integration/web/pom.xml
+++ b/apps/kafka-integration/web/pom.xml
@@ -87,7 +87,7 @@
         <dependency>
             <groupId>com.google.protobuf</groupId>
             <artifactId>protobuf-java</artifactId>
-            <version>3.0.0-beta-2</version>
+            <version>3.0.0</version>
         </dependency>
 
         <dependency>