Implementation of generic stub
diff --git a/build.json b/build.json
index 999e140..32bf992 100644
--- a/build.json
+++ b/build.json
@@ -22,6 +22,7 @@
         "include/grpc++/config.h",
         "include/grpc++/create_channel.h",
         "include/grpc++/credentials.h",
+        "include/grpc++/generic_stub.h",
         "include/grpc++/impl/call.h",
         "include/grpc++/impl/client_unary_call.h",
         "include/grpc++/impl/internal_stub.h",
@@ -51,6 +52,7 @@
         "src/cpp/client/client_unary_call.cc",
         "src/cpp/client/create_channel.cc",
         "src/cpp/client/credentials.cc",
+        "src/cpp/client/generic_stub.cc",
         "src/cpp/client/insecure_credentials.cc",
         "src/cpp/client/internal_stub.cc",
         "src/cpp/common/call.cc",