Add Example to yeelink lib

lua_modules/yeelink/Example_for_Yeelink_Lib.lua

@@ -0,0 +1,25 @@
+-- ***************************************************************************
+-- Example for Yeelink Lib
+--
+-- Written by Martin
+--
+--
+-- MIT license, http://opensource.org/licenses/MIT
+-- ***************************************************************************
+
+wifi.setmode(wifi.STATION)         --Step1: Connect to Wifi
+wifi.sta.config("SSID","Password")
+
+dht = require("dht_lib")           --Step2: "Require" the libs
+yeelink = require("yeelink_lib")
+
+yeelink.init(23333,23333,"You api-key",function()  --Step3: Register the callback function
+
+  print("Yeelink Init OK...")
+  tmr.alarm(1,60000,1,function()   --Step4: Have fun~ (Update your data)
+  
+    dht.read(4)
+    yeelink.update(dht.getTemperature())
+    
+  end)
+end)