vimrc: setup csstidy as `equalprg` for css files
vimrc: setup csstidy as `equalprg` for css files

scorpiovn/dotfiles,blueyed/dotfiles,blueyed/dotfiles,blueyed/dotfiles,blueyed/dotfiles,scorpiovn/dotfiles,scorpiovn/dotfiles,scorpiovn/dotfiles,scorpiovn/dotfiles,blueyed/dotfiles