Cleaner error message in crash handler.

IPython/core/crashhandler.py

@@ -155,7 +155,7 $self.bug_tracker
         # Construct report on disk
         report.write(self.make_report(traceback))
         report.close()
-        raw_input("Press enter to exit:")
+        raw_input("Hit <Enter> to quit this message (your terminal may close):")
 
     def make_report(self,traceback):
         """Return a string containing a crash report."""