Vim: drop elflord special case

This was for the benefit of the pairing stations, which have basically
been decommissioned. Keep the file-based switch, however, for those days
when I am in a dark mood.

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Slate: add app aliases for better readability

DRY things up and make repetition-induced errors less likely.

Signed-off-by: Wincent Colaiuta <win@wincent.com>
*sh: add `tmux` wrapper function

Largely stolen from:

  https://github.com/sds/dot/blob/master/plugins/tmux/plugin.sh

with minor tweaks.

Tired of typing even `t a -t c`.

Signed-off-by: Wincent Colaiuta <win@wincent.com>