Small fixes

Merge pull request #6 from letournel/scrutinizer-fixes

fix: travis CI build and some scrutinzer feedback

PHP 7.x support

Merge pull request #2 from letournel/add-php-7-support

fix: minor fixes, tu and php 7.0 support

Fix typo in the readme

Merge pull request #5 from letournel/fix-readme-lib-name

fix: bad lib name in the README

Add possibility to generate an ASCII map with path and improve readme

Merge pull request #1 from letournel/improve-readme-useful-cases

feat: add example in readme with new functions