update sugar-install-bundle for Bundle -> ActivityBundle

bin/sugar-install-bundle

@@ -1,12 +1,12 @@
 #!/usr/bin/env python
 import sys
 
-from sugar.activity.bundle import Bundle
+from sugar.bundle.activitybundle import ActivityBundle
 
 from dbus.mainloop.glib import DBusGMainLoop
 DBusGMainLoop(set_as_default=True)
 
-bundle = Bundle(sys.argv[1])
+bundle = ActivityBundle(sys.argv[1])
 bundle.install()
 
 print "%s: '%s' installed." % (sys.argv[0], sys.argv[1])