Update README.md

Author: dejurin

README.md

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 # PHP Micro & Router Framework Benchmark
 I often use micro & router so I decided to do benchmark. This benchmark made thanks to ([@kenjis](https://github.com/kenjis)) [PHP-Framework-Benchmark](https://github.com/kenjis/php-framework-benchmark). I changed ab to awk, added to table "type of framework" and something else...
 
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+[!["Buy Me A Coffee"](https://www.buymeacoffee.com/assets/img/custom_images/orange_img.png)](https://buymeacoffee.com/deyurii)
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 ## PHP Framework Benchmark
 
 **! Benchmark with help `wrk` https://github.com/wg/wrk**