Update README.md

Author: Crecket

README.md

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 # secure-functions
+[![Latest Stable Version](https://poser.pugx.org/crecket/secure-functions/v/stable)](https://packagist.org/packages/crecket/secure-functions)
+[![Build Status](https://travis-ci.org/Crecket/secure-functions.svg?branch=master)](https://travis-ci.org/Crecket/secure-functions)
 A collection of functions which can be used for security
 
 ## Instalation