Add PHP 7.2 to Travis tasks

Author: lcharette

.travis.yml

@@ -10,12 +10,13 @@ php:
   - 5.6
   - 7
   - 7.1
+  - 7.2
 
 env:
   matrix:
     - DB=mysql
-    - DB=sqlite 
-    - DB=pgsql 
+    - DB=sqlite
+    - DB=pgsql
 
 before_install:
   # copy sprinkles.json