Address fix for attiny example sketch

The addresses are reversed when using with the GettingStarted sketch as
described in the comments. This causes the arduino and the tiny to both
be in receiver mode.

examples/rf24_ATTiny/rf24ping85/rf24ping85.ino

@@ -68,8 +68,8 @@ void setup() {
   radio.begin(); // Start up the radio
   radio.setAutoAck(1); // Ensure autoACK is enabled
   radio.setRetries(15,15); // Max delay between retries & number of retries
-  radio.openWritingPipe(addresses[0]); // Write to device address '1Node'
-  radio.openReadingPipe(1,addresses[1]); // Read on pipe 1 for device address '2Node'
+  radio.openWritingPipe(addresses[1]); // Write to device address '2Node'
+  radio.openReadingPipe(1,addresses[0]); // Read on pipe 1 for device address '1Node'
   radio.startListening(); // Start listening
 }