ileo: call outerUpdate to update leo outline in pre_prompt_hook

IPython/Extensions/ipy_leo.py

@@ -34,6 +34,7 def init_ipython(ipy):
     expose_ileo_push(push_ipython_script, 1000)
     expose_ileo_push(push_plain_python, 100)
     expose_ileo_push(push_ev_node, 100)
+    ip.set_hook('pre_prompt_hook', ileo_pre_prompt_hook)     
     global wb
     wb = LeoWorkbook()
     ip.user_ns['wb'] = wb 
@@ -606,6 +607,12 def mb_completer(self,event):
     cmds.sort()
     return cmds
 
+def ileo_pre_prompt_hook(self):
+    c.outerUpdate()
+    raise TryNext
+    
+
+
 def show_welcome():
     print "------------------"
     print "Welcome to Leo-enabled IPython session!"