(2.2.0) Added Color device support

Added Color device example
Fixed indentation

examples/EspalexaColor/EspalexaColor.ino

@@ -0,0 +1,96 @@
+/*
+ * This is a basic example on how to use Espalexa with RGB color devices.
+ */ 
+#ifdef ARDUINO_ARCH_ESP32
+#include <WiFi.h>
+#else
+#include <ESP8266WiFi.h>
+#endif
+
+#include <Espalexa.h>
+
+// prototypes
+boolean connectWifi();
+
+//callback function prototype
+void colorLightChanged(uint8_t brightness, uint32_t rgb);
+
+// Change this!!
+const char* ssid = "...";
+const char* password = "wifipassword";
+
+boolean wifiConnected = false;
+
+Espalexa espalexa;
+
+void setup()
+{
+  Serial.begin(115200);
+  // Initialise wifi connection
+  wifiConnected = connectWifi();
+
+  if(wifiConnected){
+    espalexa.addDevice("Light", colorLightChanged);
+
+    espalexa.begin();
+
+  } else
+  {
+    while (1) {
+      Serial.println("Cannot connect to WiFi. Please check data and reset the ESP.");
+      delay(2500);
+    }
+  }
+}
+
+void loop()
+{
+   espalexa.loop();
+   delay(1);
+}
+
+//the color device callback function has two parameters
+void colorLightChanged(uint8_t brightness, uint32_t rgb) {
+  //do what you need to do here, for example control RGB LED strip
+  Serial.print("Brightness: ");
+  Serial.print(brightness);
+  Serial.print(", Red: ");
+  Serial.print((rgb >> 16) & 0xFF); //get red component
+  Serial.print(", Green: ");
+  Serial.print((rgb >>  8) & 0xFF); //get green
+  Serial.print(", Blue: ");
+  Serial.println(rgb & 0xFF); //get blue
+}
+
+// connect to wifi – returns true if successful or false if not
+boolean connectWifi(){
+  boolean state = true;
+  int i = 0;
+
+  WiFi.mode(WIFI_STA);
+  WiFi.begin(ssid, password);
+  Serial.println("");
+  Serial.println("Connecting to WiFi");
+
+  // Wait for connection
+  Serial.print("Connecting...");
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+    if (i > 40){
+      state = false; break;
+    }
+    i++;
+  }
+  Serial.println("");
+  if (state){
+    Serial.print("Connected to ");
+    Serial.println(ssid);
+    Serial.print("IP address: ");
+    Serial.println(WiFi.localIP());
+  }
+  else {
+    Serial.println("Connection failed.");
+  }
+  return state;
+}

library.properties

@@ -1,5 +1,5 @@
 name=Espalexa
-version=2.1.2
+version=2.2.0
 author=Christian Schwinne
 maintainer=Christian Schwinne
 sentence=Library to control an ESP module with the Alexa voice assistant

readme.md

@@ -4,12 +4,16 @@ Now compatible with both ESP8266 and ESP32!
 
 #### What does this do similar projects like Fauxmo don't already?
 
-It allows you to set a ranged value (e.g. Brightness) additionally to standard on/off control.
-You can say "Alexa, turn the light to 75%".
+It allows you to set a ranged value (e.g. Brightness, Temperature) additionally to standard on/off control.
+For example, you can say "Alexa, turn the light to 75% / 21 degrees".
+Alexa finally added color support to the local API! You can see how to add color devices in the EspalexaColor example.
+Then, you can say "Alexa, turn the light to Blue". Color temperature (white shades) is also supported, but still a WIP.
+
 If you just need On/Off (eg. for a relay) I'd recommend [arduino-esp8266-alexa-wemo-switch](https://github.com/kakopappa/arduino-esp8266-alexa-wemo-switch) instead.
 
 Additionally, it's possible to add up to a total of 20 devices.
 Each device has a brightness range from 0 to 255, where 0 is off and 255 is fully on.
+You can get a percentage from that value using `espalexa.toPercent(brightness)`
 
 #### How do I install the library?