and countdown test

examples/play_test/play_test.ino

+#include <SoftwareSerial.h>
+#include <SOMO_II.h>
+
+// set up a new serial object
+SoftwareSerial mySerial = SoftwareSerial(8, 9);
+
+SOMO_II mp3 = SOMO_II(mySerial);
+
+void setup() {
+  mySerial.begin(9600);
+  mp3.begin();
+
+  Serial.begin(9600);
+  Serial.println(F("starting play_test"));
+}
+
+void loop() {
+  Serial.println(F("playing countdown"));
+  mp3.playFile(1,5);
+  delay(1000);
+  mp3.playFile(1,4);
+  delay(1000);
+  mp3.playFile(1,3);
+  delay(1000);
+  mp3.playFile(1,2);
+  delay(1000);
+  mp3.playFile(1,1);
+  delay(1000);
+  mp3.playFile(1,6);
+  delay(1000);
+}
+