Specify php version for building docs. Sami requires 7+ (#70)

chingor13 · web-flow · commit 8b921b20c648 · 2017-11-17T11:05:13.000-08:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,3 +1,7 @@
+language: php
+php:
+  - '7.1'
+
 install:
   - wget -O sami.phar http://get.sensiolabs.org/sami.phar
 
