visual-line-mode tweaks

[Miles Bader]

(1) Maybe visual-line-mode should turn off auto-fill-mode -- it's
annoying to have your lines truncated physically when editing a file
that intentionally uses a line-per-paragraph, and it's very common for
auto-fill mode to be turned on by default.

[I turn on auto-fill mode for text-mode, text-mode is my default
major-mode -- but if i visit a file which uses line-per-paragraph, I do
M-x visual-line-mode...]

(2) The lighter should probably be "Wrap", not "wrap", to match other
lighters.

-Miles

-- 
Rational, adj. Devoid of all delusions save those of observation, experience
and reflection.