fix arduino,add readme

Arduino/epd1in54_V2/epd1in54_V2.ino

@@ -0,0 +1,32 @@
+#include <SPI.h>
+#include "epd1in54_V2.h"
+#include "imagedata.h"
+
+Epd epd;
+
+void setup()
+{
+    // put your setup code here, to run once:
+    Serial.begin(9600);
+    if (epd.Init() != 0) {
+        Serial.println("e-Paper init failed");
+        return;
+    }
+
+    Serial.println("e-Paper clear");
+    epd.Clear();
+
+    Serial.println("e-Paper show pic");
+    epd.Display(IMAGE_DATA);
+
+    Serial.println("e-Paper clear and sleep");
+    epd.Clear();
+    epd.Sleep();
+
+}
+
+void loop()
+{
+
+}
+