Added JsonGenerator example for Arduino

JsonGenerator/Printable.h

@@ -5,12 +5,20 @@
 
 #pragma once
 
+#ifndef ARDUINO
+
 class Print;
 
 class Printable
 {
 public:
 
-    virtual size_t writeTo(Print& p) const = 0;
+    virtual size_t printTo(Print& p) const = 0;
 };
 
+#else
+
+#include <Printable.h>
+
+#endif
+