language: php
php:
- 5.6
- 7.0
script: 
- composer install
- vendor/bin/phpunit

language: php
php:
- 7.0
- 7.1
script: 
- composer install
- vendor/bin/phpunit

Drop support for 5.6 in Travis Add support for 7.1 in Travis
Drop support for 5.6 in Travis
Add support for 7.1 in Travis
