Add color column after column 80 to vimrc

Instead of only colouring one column after the 80th one change the
background to all the following.

vim/vimrc

@@ -12,6 +12,7 @@ set softtabstop=4  " If not 0, must coincide with "tabstop" for tabs indentation
                    " and with "shiftwith" for spaces indentation
 
 set list listchars=tab:»\ ,trail:·
+let &colorcolumn=join(range(81, 160), ',')
 
 " Coding Styles
 if has('autocmd')