add python/cornerclock.py

python/cornerclock.py

+#/usr/bin/env python
+
+import datetime
+import time
+import client
+
+while True:
+    t = datetime.datetime.now().strftime(" %H:%M:%S")
+    client.write(client.NUM_SEG_X - len(t), 0, t);
+    time.sleep(1)
+