Updated Lua Scripting (markdown)

Lua-Scripting.md

@@ -203,6 +203,7 @@ Set the duty cycle of the specified PWM channel.
 
 ```
 t = Timer.new();
+timingAdd = 0;
 
 function onTick()
    auxV = getAuxAnalog(0)
@@ -210,8 +211,17 @@ function onTick()
    if auxV > 2 then
      t:reset();
    end
+
    val = t:getElapsedSeconds();
 
+   if t:getElapsedSeconds() < 3 then
+     timingAdd = 10;
+   else
+     timingAdd = 0;
+   end
+   setTimingAdd(timingAdd)
+
+
    print('Hello analog ' .. auxV .. " " .. val)
 end
 ```