i3 - improved tiling WM


userguide: document exit confirmation dialog

Patch status: merged

Patch by Tony Crisci

Long description:

In the section "Exiting i3", document the confirmation dialog (nagbar)
that will show when the user presses the default keys to exit in such a
way to hint that it is configurable.

To apply this patch, use:
curl http://cr.i3wm.org/patch/578/raw.patch | git am

b/docs/userguide

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@@ -153,6 +153,7 @@ to upgrade to a newer version of i3) you can use +$mod+Shift+r+.
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 === Exiting i3
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 To cleanly exit i3 without killing your X server, you can use +$mod+Shift+e+.
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+By default, a dialog will ask you to confirm if you really want to quit.
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 === Floating
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