fix vs build

windows/LightGBM.vcxproj

@@ -197,6 +197,7 @@
     <ClInclude Include="..\include\LightGBM\dataset.h" />
     <ClInclude Include="..\include\LightGBM\dataset_loader.h" />
     <ClInclude Include="..\include\LightGBM\feature_group.h" />
+    <ClInclude Include="..\include\LightGBM\json11.hpp" />
     <ClInclude Include="..\include\LightGBM\lightgbm_R.h" />
     <ClInclude Include="..\include\LightGBM\meta.h" />
     <ClInclude Include="..\include\LightGBM\metric.h" />
@@ -259,6 +260,7 @@
     <ClCompile Include="..\src\io\dataset.cpp" />
     <ClCompile Include="..\src\io\dataset_loader.cpp" />
     <ClCompile Include="..\src\io\file_io.cpp" />
+    <ClCompile Include="..\src\io\json11.cpp" />
     <ClCompile Include="..\src\io\metadata.cpp" />
     <ClCompile Include="..\src\io\parser.cpp" />
     <ClCompile Include="..\src\io\tree.cpp" />

windows/LightGBM.vcxproj.filters

@@ -204,6 +204,9 @@
     <ClInclude Include="..\include\LightGBM\utils\file_io.h">
       <Filter>include\LightGBM\utils</Filter>
     </ClInclude>
+    <ClInclude Include="..\include\LightGBM\json11.hpp">
+      <Filter>include\LightGBM\utils</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\src\application\application.cpp">
@@ -293,5 +296,8 @@
     <ClCompile Include="..\src\io\file_io.cpp">
       <Filter>src\io</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\io\json11.cpp">
+      <Filter>src\io</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>