Use colorcolumn limit in Markdown if available

Not sure I like the red in my colorscheme though, will probably try and
fix that

1 files changed, 4 insertions, 1 deletions

diff --git a/vim/vimrc b/vim/vimrc
index a05b518a..e9c94a06 100644
--- a/vim/vimrc
+++ b/vim/vimrc
@@ -14,7 +14,10 @@ if has("autocmd")
     " Markdown
     augroup markdown
         au!
-        autocmd Syntax markdown setlocal textwidth=80
+        autocmd Syntax markdown setlocal textwidth=79
+        if exists("&colorcolumn")
+            autocmd Syntax markdown setlocal colorcolumn=80
+        endif
     augroup END
 endif