Add stdout flushing statements to example.

This forces the prints to happen right away, so the example behaves a little
more like you'd expect.

docs/examples/kernel/task2.py

@@ -3,6 +3,8 b''
 
 from IPython.kernel import client
 import time
+import sys
+flush = sys.stdout.flush
 
 tc = client.TaskClient()
 mec = client.MultiEngineClient()
@@ -16,6 +18,7 b' for i in range(6):'
     time.sleep(1.0)
     print "Queue status (vebose=False)"
     print tc.queue_status()
+    flush()
     
 for i in range(24):
     tc.run(client.StringTask('time.sleep(1)'))
@@ -24,12 +27,14 b' for i in range(6):'
     time.sleep(1.0)
     print "Queue status (vebose=True)"
     print tc.queue_status(True)
+    flush()
 
 for i in range(12):
     tc.run(client.StringTask('time.sleep(2)'))
 
 print "Queue status (vebose=True)"
 print tc.queue_status(True)
+flush()
 
 qs = tc.queue_status(True)
 sched = qs['scheduled']
@@ -41,4 +46,5 b' for i in range(6):'
     time.sleep(1.0)
     print "Queue status (vebose=True)"
     print tc.queue_status(True)
+    flush()