Add sudo write command to vim

.config/nvim/init.vim

@@ -11,3 +11,8 @@ highlight CursorLine guibg=#303000 ctermbg=234
 " configure reasonable swap file
 " https://begriffs.com/posts/2019-07-19-history-use-vim.html?hn=3#backups-and-undo
 runtime swap.vim
+
+let g:deoplete#enable_at_startup = 1
+
+" Allow saving of files as sudo when I forgot to start vim using sudo.
+cmap w!! w !sudo tee > /dev/null %