updates tab width and adds plugin

.config/nvim/init.vim

@@ -4,6 +4,7 @@ set clipboard=unnamedplus
 set nocompatible
 
 set tabstop=4
+set shiftwidth=4
 set noshowmode
 set ruler
 set list lcs=trail:·,tab:⭾\ 
@@ -15,6 +16,7 @@ set number relativenumber
 
 call plug#begin(stdpath('data') . '/plugged')
   Plug 'tpope/vim-sensible'
+  Plug 'tpope/vim-sleuth'
   Plug 'itchyny/lightline.vim'
   Plug 'ap/vim-css-color'
   Plug 'neoclide/coc.nvim', {'branch': 'release'}