Chaned the tmux theme for the numbering of the windows from dsquare to
fsquare. This gives us a filled in square with contrast to easily see
the window numbers.
Due to the fact that this config is not used we are going to clean this
up. Going forward only the plugins directory will be used so that any
custom plugins I want to add can be added here and managed locally. This
leaves the neovim distribution (if wanted) up to the user.
Reviewed-on: #37
Fixed issue where when opening a second terminal it'd open in the same
tmux session making it so that it's just a mirror of the first terminal.
Closing that terminal would close all terminals. Also added an alias to
vim which calls nvim
Reviewed-on: #36
wesley