merge new features

src/main/java/examples/dataloader/AdSampleConstructor.java

@@ -45,7 +45,7 @@ public class AdSampleConstructor {
         userFeature.setMachineinfo_brand(record.getString("machineinfo_brand"));
         userFeature.setMachineinfo_model(record.getString("machineinfo_model"));
         userFeature.setMachineinfo_sdkversion(record.getString("machineinfo_sdkversion"));
-        userFeature.setMachineinfo_brand(record.getString("machineinfo_wechatversion"));
+        userFeature.setMachineinfo_wechatversion(record.getString("machineinfo_wechatversion"));
 
 
         // 1day features