add ansi-term
add defcustom and change default to create new shell without asking
Merge pull request #4 from steckerhalter/no-more-shell-buffers-optional-question

add defcustom and change default to create new shell without asking
Merge branch 'ansi-term' of steckerhalter

Merge branch 'ansi-term' of github.com:steckerhalter/shell-switcher into
steckerhalter-ansi-term

Conflicts:
	shell-switcher.el