Fixed authentication, added examples, proper class without code in the end

Dump.py

@@ -0,0 +1,49 @@
+import RPi.GPIO as GPIO
+import MFRC522
+import signal
+
+continue_reading = True
+
+# Capture SIGINT for cleanup when the script is aborted
+def end_read(signal,frame):
+    global continue_reading
+    print "Ctrl+C captured, ending read."
+    continue_reading = False
+    GPIO.cleanup()
+
+# Hook the SIGINT
+signal.signal(signal.SIGINT, end_read)
+
+# Create an object of the class MFRC522
+MIFAREReader = MFRC522.MFRC522()
+
+# This loop keeps checking for chips. If one is near it will get the UID and authenticate
+while continue_reading:
+    
+    # Scan for cards    
+    (status,TagType) = MIFAREReader.MFRC522_Request(MIFAREReader.PICC_REQIDL)
+
+    # If a card is found
+    if status == MIFAREReader.MI_OK:
+        print "Card detected"
+    
+    # Get the UID of the card
+    (status,uid) = MIFAREReader.MFRC522_Anticoll()
+
+    # If we have the UID, continue
+    if status == MIFAREReader.MI_OK:
+
+        # Print UID
+        print "Card read UID: "+str(uid[0])+","+str(uid[1])+","+str(uid[2])+","+str(uid[3])
+    
+        # This is the default key for authentication
+        key = [0xFF,0xFF,0xFF,0xFF,0xFF,0xFF]
+        
+        # Select the scanned tag
+        MIFAREReader.MFRC522_SelectTag(uid)
+
+        # Dump the data
+        MIFAREReader.MFRC522_DumpClassic1K(key, uid)
+
+        # Stop
+        MIFAREReader.MFRC522_StopCrypto1()