Update DigiCDC.h

Author: Erik Tylek Kettenburg

hardware/digistump/avr/libraries/DigisparkCDC/DigiCDC.h

@@ -38,6 +38,7 @@ class DigiCDCDevice  : public Stream {
     public:
         DigiCDCDevice();
         void begin(), begin(unsigned long x);
+        void setDelay(uint8_t delay);
         void end();
         void refresh();
         void task();
@@ -58,4 +59,4 @@ class DigiCDCDevice  : public Stream {
 extern DigiCDCDevice SerialUSB;
 
 
-#endif // __DigiCDC_h__
+#endif // __DigiCDC_h__