update readme

README.md

@@ -1,17 +1,33 @@
 # Arduino Home Assistant
 
+ArduinoHA allows to integrate an Arduino/ESP based device with Home Assistant using MQTT.
+The library is designed to use as little resources (RAM/flash) as possible.
+Initially it was optimized to work on Arduino Uno with Ethernet Shield,
+but I successfully use it on ESP8266/ESP8255 boards in my projects.
+
 ## Examples
 
+* [Binary Sensor](examples/binary-sensor/binary-sensor.ino)
+* [LED switch](examples/led-switch/led-switch.ino)
+* [MQTT with credentials](examples/mqtt-with-credentials/mqtt-with-credentials.ino)
+* [Multi-state button](examples/multi-state-button/multi-state-button.ino)
+* [RFID tag reader](examples/rfid-tag-reader/rfid-tag-reader.ino)
+* [Sensor (temperature, humidity, etc.)](examples/sensor/sensor.ino)
+* [NodeMCU Wi-Fi](examples/nodemcu/nodemcu.ino)
+
 ## Tested boards
 
 * Arduino Uno
 * Arduino Mega
 * Controllino Maxi (standard/pure/automation/power)
 * Controllino Mega (standard/pure)
+* NodeMCU
+* ESP-01
+* Generic ESP8266/ESP8255
 
 ## Tested Arduino Shields
 
-* Arduino Ethernet Shield (W5100)
+* Arduino Ethernet Shield (WizNet W5100)
 
 ## Supported HA types
 
@@ -19,9 +35,9 @@
 * Device triggers
 * Switches
 * Sensors
-* Tag scanners
+* Tag scanner
 
 ## Unsupported features
 
-The library doesn't support all features of the MQTT integration with Home Assistant.
+The library doesn't support all features of the MQTT integration.
 If you need support for a new feature please open a new issue in the repository.