First version with a button and added the Blinker library to the source root.

Digispark_Passkey/Blinker/Blinker.h

@@ -0,0 +1,28 @@
+#ifndef _BLINKER_H
+#define _BLINKER_H
+
+#if (ARDUINO >= 100)
+# include <Arduino.h>
+#else
+# include <WProgram.h>
+#endif
+
+class Blinker {
+	private:
+        int _blinkPin;
+        uint32_t _highDelay;
+        uint32_t _lowDelay;
+        uint32_t _lastBlink;
+        boolean _blinkState;
+        boolean _running;
+
+	public:
+		Blinker(int pin);
+		void setDelay(uint32_t d);
+		void setDelay(uint32_t h, uint32_t l);
+        void blink();
+        void start();
+        void stop(bool idleState = LOW);
+};
+
+#endif