merge new features

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

@@ -44,7 +44,7 @@ public class AdSampleConstructor {
         userFeature.setMid(record.get("machinecode").toString());
         userFeature.setMachineinfo_brand(record.getString("machineinfo_brand"));
         userFeature.setMachineinfo_model(record.getString("machineinfo_model"));
-        userFeature.setMachineinfo_platform(record.getString("machineinfo_platform"));
+        userFeature.setMachineinfo_sdkversion(record.getString("machineinfo_sdkversion"));
         userFeature.setMachineinfo_brand(record.getString("machineinfo_wechatversion"));