Create highlights on VimEnter

Also update README.md

README.md

@@ -4,6 +4,10 @@ A statusline / bufferline for Neovim written in Lua. It is inspired by
 [vim-airline](https://github.com/vim-airline/vim-airline) but aims to
 be as light and simple as possible.
 
+_**Note**: this plugin is mainly for my own use. I won't add new
+features/parts/themes if I don't need them. Feel free to submit PRs or fork the
+plugin though._
+
 ![screenshot](./screenshot.png)
 
 ## Installation

lua/hardline.lua

@@ -72,7 +72,7 @@ local function set_hlgroups()
         table.insert(a, string.format('%s=%s', k, v))
       end
       a = table.concat(a, ' ')
-      cmd(string.format('autocmd ColorScheme * hi %s %s', hlgroup, a))
+      cmd(string.format('autocmd VimEnter,ColorScheme * hi %s %s', hlgroup, a))
     end
   end
 end