Update README.md

Author: overtrue

README.md

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+> 🚨 This package was created because of this issue: laravel/passport#382 . But the new version of passport has officially solved this issue at: laravel/passport#1447, so I think we can stop needing this package.
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 # Laravel Passport Cache Token
 
 Make [laravel/passport](https://github.com/laravel/passport) token cacheable.