added arduino, modified build

arduino/libraries/SpacebrewYun/examples/spacebrewString/spacebrewString.ino

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+/*
+  Spacebrew String
+
+ Demonstrates how to create a sketch that sends and receives strings
+ to and from Spacebrew. Every time string data is received it
+ is output to the Serial monitor.
+
+ Make sure that your Yún is connected to the internet for this example
+ to function properly.
+
+ The circuit:
+ - No circuit required
+
+ created 2013
+ by Julio Terra
+
+ This example code is in the public domain.
+
+ More information about Spacebrew is available at:
+ http://spacebrew.cc/
+
+ */
+
+#include <Bridge.h>
+#include <SpacebrewYun.h>
+
+// create a variable of type SpacebrewYun and initialize it with the constructor
+SpacebrewYun sb = SpacebrewYun("spacebrewYun Strings", "String sender and receiver");
+
+// create variables to manage interval between each time we send a string
+long last_time = 0;
+int interval = 2000;
+
+void setup() {
+
+  // start the serial port
+  SerialUSB.begin(57600);
+
+  // for debugging, wait until a serial console is connected
+  delay(4000);
+  while (!SerialUSB) {
+    ;
+  }
+
+  // start-up the bridge
+  Bridge.begin();
+
+  // configure the spacebrew object to print status messages to serial
+  sb.verbose(true);
+
+  // configure the spacebrew publisher and subscriber
+  sb.addPublish("speak", "string");
+  sb.addSubscribe("listen", "string");
+
+  // register the string message handler method
+  sb.onStringMessage(handleString);
+
+  // connect to cloud spacebrew server at "sandbox.spacebrew.cc"
+  sb.connect("sandbox.spacebrew.cc");
+}
+
+
+void loop() {
+  // monitor spacebrew connection for new data
+  sb.monitor();
+
+  // connected to spacebrew then send a string every 2 seconds
+  if (sb.connected()) {
+
+    // check if it is time to send a new message
+    if ((millis() - last_time) > interval) {
+      sb.send("speak", "is anybody out there?");
+      last_time = millis();
+    }
+  }
+}
+
+// handler method that is called whenever a new string message is received
+void handleString(String route, String value) {
+  // print the message that was received
+  SerialUSB.print("From ");
+  SerialUSB.print(route);
+  SerialUSB.print(", received msg: ");
+  SerialUSB.println(value);
+}
+