Added GarageDoorExample to readme

Author: sivar2311

README.md

@@ -23,9 +23,10 @@
 
 ## Examples
 |PlatformIO|Arduino|
-|--|--|
+|:--:|:--:|
 |[Switch](https://github.com/sinricpro/esp8266-esp32-sdk/tree/master/pio-examples/switch)  |[Switch](https://github.com/sinricpro/esp8266-esp32-sdk/tree/master/examples/Switch)|
 |[Doorbell](https://github.com/sinricpro/esp8266-esp32-sdk/tree/master/pio-examples/doorbell)|[Doorbell](https://github.com/sinricpro/esp8266-esp32-sdk/tree/master/examples/doorbell)|
+| - | [GarageDoorOpener](https://github.com/sinricpro/esp8266-esp32-sdk/tree/master/examples/GarageDoor)|
 
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