update CMakeLists.txt

CMakeLists.txt

@@ -438,6 +438,8 @@ set(
       src/io/parser.cpp
       src/io/train_share_states.cpp
       src/io/tree.cpp
+      src/io/pairwise_lambdarank_bin.cpp
+      src/io/pairwise_ranking_feature_group.cpp
       src/metric/dcg_calculator.cpp
       src/metric/metric.cpp
       src/network/linker_topo.cpp