Tell travis which PHP versions to use

lornajane · lornajane · commit 4b4beb4610e2 · 2017-06-18T15:05:50.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,4 +1,8 @@
 language: php
+php:
+  - '7.0'
+  - '7.1'
+  - nightly
 install: composer install
 script: composer test
 before_script: composer phpcs
