chore(doc): add upgrade comments in readme (#452)

* chore(doc): add upgrade comments in readme

* chore(doc): add upgrade comments in readme

README.md

@@ -20,7 +20,9 @@ Control your Midea M-Smart appliances via local area network.
 
 1. Remove old georgezhao2010/midea_ac_lan integration
 2. [Install current integration](#installation)
-3. Done, your devices, configuration and history data should be there and work as before.
+3. You devices will NOT be deleted, it should still exist and you don't need to discover or add it again.
+4. If you can't found your device entries, try to configure your device and enable it in `Settings -> Devices & Services -> Midea AC LAN -> Devices -> CONFIGURE`
+5. Done, your devices should works as before.
 
 ## Supported brands
 
@@ -157,7 +159,7 @@ If you are very concerned about the synchronization speed of the status, you can
 
 ### Extra sensor and switch entities
 
-After configuration, one of few main entity (e.g. climate entity) may be generated . If you want to make the attributes to extra sensor and switch entities, click CONFIGURE in Midea AC LAN integration card to choose (if your devices supported).
+After configuration, one of few main entity (e.g. climate entity) may be generated . If you want to make the attributes to extra sensor and switch entities, click CONFIGURE in Midea AC LAN integration card to choose (your device MUST support this feature).
 
 ### Customize
 

README_hans.md

@@ -24,7 +24,9 @@
 
 1. 删除旧的集成：[georgezhao2010/midea_ac_lan]
 2. [安装当前集成](#安装)
-3. 完成, 之前的设备和数据应该都存在了，直接正常使用即可.
+3. 原有的设备不会被删除，应该仍然都存在，因此无需重新Discover搜索和重新添加设备
+4. 如果原有设备的实体开关、传感器消失，请通过 `设置 -> 设备与服务 -> Midea AC LAN -> 设备` ，在指定的设备下，点击 `选项`重新启用即可。
+5. 完成, 设备仍然像之前一样正常使用即可.
 
 ## 已支持的品牌
 
@@ -141,7 +143,7 @@ wget -O - https://github.com/wuwentao/midea_ac_lan/raw/master/scripts/install.sh
 
 ## 配置
 
-集成配置位于`配置 -> 设备与服务 -> Midea AC LAN -> 设备 -> 选项`。
+集成配置位于 `设置 -> 设备与服务 -> Midea AC LAN -> 设备` 在指定的设备下，点击 `选项`。
 在配置中, 你可以在设备IP改变后重新指定IP地址, 也可以增加扩展的传感器或开关等实体或者自定义你的设备
 
 ### IP地址
@@ -158,7 +160,7 @@ wget -O - https://github.com/wuwentao/midea_ac_lan/raw/master/scripts/install.sh
 
 ## 额外的传感器及开关实体
 
-配置完成后, 可能会默认生成一个或几个主要实体(比如climate实体)。如果需要其它属性生成为扩展的传感器及开关实体, 在Midea AC LAN集成卡片上点击'选项', 并选择要生成的传感器及开关(如果你的设备支持该属性)。
+配置完成后, 可能会默认生成一个或几个主要实体(比如climate实体)。如果需要其它属性生成为扩展的传感器及开关实体, 在Midea AC LAN集成卡片上点击`选项`, 并选择要生成的传感器及开关(设备必须支持该功能)。
 
 ### 自定义