update brldemo to refresh braille for 5 sec

play zone/writeBrl.py

@@ -1,13 +1,17 @@
 #!/bin/python
 
 import brlapi
+import time
 
 brl = brlapi.Connection()
 print(brl.displaySize)
 print(brl.driverName)
-try:
-    brl.writeText('test')
-except Exception as e:
+
+t = time.time()
+while(time.time() - t <= 5):
+    try:
+        brl.writeText('this is a 5 second test')
+    except Exception as e:
         print(e)