Suppress ipython banner

dotfiles/ipython.py

@@ -1,7 +1,10 @@
 try:
     import os, IPython
+    from traitlets import config
     os.environ['PYTHONSTARTUP'] = ''  # Prevent running this again
-    IPython.start_ipython()
+    cfg = config.Config()
+    cfg.TerminalIPythonApp.display_banner = False
+    IPython.start_ipython(config=cfg)
     raise SystemExit
 except ImportError:
     pass