add timestamp

src/include/proto/turnstile.proto

@@ -6,7 +6,8 @@ import "rawpic.proto";
 
 message turnstile
 {
-  optional rawpic pic = 1;
-  optional bool state = 2;   //ture表示闸机坏了
+  optional int64 time = 1;
+  optional rawpic pic = 2;
+  optional bool state = 3;   //ture表示闸机坏了
 }