This is a syntax checker for Syntastic that highlights arc lint errors inside vim itself.

1. This plugin requires Syntastic, so install that first.
2. Clone this repository somewhere with git clone https://github.com/rissole/syntastic-arclint.
3. Copy arc.vim into syntastic/syntax_checkers/php which will be somewhere in your .vim folder or something like that.
4. Modify defaultCheckers dict in registry.vim as follows:

\ 'php':         ['php', 'phpcs', 'phpmd', 'arc'],

to make this linter enabled by default.