set evil-mc-enable-bar-cursor to nil when in terminal environment

[josephmturner]

Thank you for evil-mc!

When running emacs in a terminal, the bar cursor appears as an empty block, which was confusing to me until I stumbled across this comment suggesting (setq evil-mc-enable-bar-cursor nil).

Please consider setting the default evil-mc-enable-bar-cursor to nil when in a terminal environment. :)