Install PHPCS globally with composer rather than git

[jeremyfelt]

Via #608, VVV doesn't necessarily need to provide PHP_Codesniffer via git clone and can instead use Composer to install it globally.

It would be interesting to hear from anyone working on the WordPress Coding Standards project as to whether its helpful to have the PHP_Codesniffer git repository available. /cc @westonruter, @GaryJones 😄

[westonruter]

I would say it is not really necessary to have it installed by default as a Git clone. It is rare that I need to change out the PHPCS version when developing for WPCS.

[tomjn]

Closing as it's already been implemented

[lock]

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