Update bapp.py

linux:~> bapp
BlenderStartupError: The following directories do not exist
        ./config
        ./scripts
Bye bye
The program "bapp" exited with retcode 1


linux:~/education/python/library/subprocess/bapp> bapp
Parent 24844 launched child 24845
connect failed: No such file or directory
Read new prefs: ./config/userpref.blend
found bundled python: /home/satishg/bin/blenderinstalldir/blender-2.70-linux-glibc211-x86_64/2.70/python

Blender quit
Child process 24845 terminited with retcode 0
Bye bye
The program "bapp" exited with retcode 0