Add signal so qweechat will exit on command line ctrl+c

qweechat/qweechat.py

@@ -33,6 +33,7 @@ It requires requires WeeChat 0.3.7 or newer, running on local or remote host.
 #     start dev
 #
 
+import signal
 import sys
 import traceback
 from pkg_resources import resource_filename
@@ -46,6 +47,8 @@ from debug import DebugDialog
 from about import AboutDialog
 from version import qweechat_version
 
+signal.signal(signal.SIGINT, signal.SIG_DFL)
+
 QtCore = qt_compat.import_module('QtCore')
 QtGui = qt_compat.import_module('QtGui')