Set up Vim with reasonable defaults

vim_setup.sh

#!/bin/sh

vimrc="$HOME/.vimrc"
vim_plugin_dir="$HOME/.vim/plugin"
sensible_plugin='https://raw.githubusercontent.com/tpope/vim-sensible/master/plugin/sensible.vim'

mkdir -p "$vim_plugin_dir"
wget -P "$vim_plugin_dir" "$sensible_plugin"

cat << "EOT" - >> "$vimrc"
set modeline
set background=dark
set number
set ignorecase

""" Default spacing behavior """
set expandtab
set softtabstop=4
set shiftwidth=4
EOT