Updated README with Serasa Experian user (#345)

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Author: andre-marcos-perez

README.md

@@ -120,4 +120,5 @@ Please send a PR with your company name and @githubhandle if you may.
 
 1. [Digio](https://www.digio.com.br/) [[@afonsomy](https://github.com/afonsomy)]
 2. [Pier](https://www.pier.digital/) [[@flaviomax](https://github.com/flaviomax)]
-3. [M4U](https://www.m4u.com.br/) [[@Thiago-Dantas](https://github.com/Thiago-Dantas)]
+3. [M4U](https://www.m4u.com.br/) [[@Thiago-Dantas](https://github.com/Thiago-Dantas)]
+4. [Serasa Experian](https://www.serasaexperian.com.br/) [[@andre-marcos-perez](https://github.com/andre-marcos-perez)]