Capturing Keyboard interrupt.

IPython/nbconvert/post_processors/serve.py

@@ -37,9 +37,12 b' class ServePostProcessor(PostProcessorBase):'
         Simple implementation to serve the build directory.
         """
         
+        try:
         os.chdir(self.build_directory)
         httpd = HTTPServer(('127.0.0.1', 8000), SimpleHTTPRequestHandler)
         sa = httpd.socket.getsockname()
-        print("Serving '" + input + "' nbconverted from ipynb on http://" + sa[0] + ":" + str(sa[1]) + "/")
+            print("Serving " + input[2:] + " on http://" + sa[0] + ":" + str(sa[1]))
         print("Use Control-C to stop this server.")
         httpd.serve_forever()
+        except KeyboardInterrupt:
+            print("The server is shut down.")