added arduino, modified build

arduino/libraries/Robot_Control/examples/learn/Compass/Compass.ino

@@ -0,0 +1,42 @@
+/*
+ Compass
+
+ Try the compass both on the robot's TFT
+ and through the serial port.
+
+ Circuit:
+ * Arduino Robot
+
+ created 1 May 2013
+ by X. Yang
+ modified 12 May 2013
+ by D. Cuartielles
+
+ This example is in the public domain
+ */
+
+#include <ArduinoRobot.h>
+#include <Wire.h>
+
+void setup() {
+  // initialize the robot
+  Robot.begin();
+
+  // initialize the robot's screen
+  Robot.beginTFT();
+
+  // initialize the serial port
+  Serial.begin(9600);
+}
+
+void loop() {
+  // read the compass
+  int compass = Robot.compassRead();
+
+  // print out the sensor's value
+  Serial.println(compass);
+
+  // show the value on the robot's screen
+  Robot.drawCompass(compass);
+}
+