Merge pull request #61 from snapshotpl/php7-tests

Add php7 tests

Author: holorhythms

.travis.yml

@@ -2,9 +2,13 @@ language: php
 
 php:
  - 5.6
+ - 7.0
+ - 7.1
+ - 7.2
+ - 7.3
 
 sudo: false
 
-install: travis_retry composer install --no-interaction --prefer-source
+install: travis_retry composer install --no-interaction
 
 script: vendor/bin/phpunit