add banner to kernel_info_reply

IPython/kernel/zmq/ipkernel.py

@@ -575,6 +575,7 b' class Kernel(Configurable):'
             'ipython_version': ipython_version,
             'language_version': language_version,
             'language': 'python',
+            'banner': self.shell.banner,
         }
         msg = self.session.send(stream, 'kernel_info_reply',
                                 vinfo, parent, ident)