Fix: off() API not working. (#17)

This fixes #16.

Author: aentinger

src/GigaDisplayRGB.h

@@ -28,7 +28,7 @@ class GigaDisplayBacklight {
         }
         void cb() {
             static int counter = 0;
-            if (counter > intensity) {
+            if (counter >= intensity) {
                 *pin = 0;
             } else {
                 *pin = 1;
@@ -50,4 +50,4 @@ class GigaDisplayBacklight {
         int intensity;
 };
 
-#endif
+#endif