readme
add alias and helper script
add setup script and os dependent code
fixed -d
fixed file check error
support personal shell rc
rename .bash_userid to mybashrc
add execfile procedure and alias
add /bin/sh and remove some history setting
add alias and modify \033[01;32m\]\u@\h:\[\033[01;33m\]\w\[\033[00;36m\][W$WINDOW]\[\033[00m\]\$
update message