add CommonRequest.execute

src/main/java/com/imyeyu/network/TimiRequest.java

@@ -59,4 +59,12 @@ public class TimiRequest extends GsonRequest {
 		}
 		return resp.getData();
 	}
+
+	@Override
+	public void execute() throws IOException {
+		TimiResponse<?> resp = getGson().fromJson(asJsonObject(), TypeToken.getParameterized(TimiResponse.class, Object.class).getType());
+		if (resp.isFail()) {
+			throw resp.toException();
+		}
+	}
 }