Merge pull request #27 from vicgonvt/update_travis_php

Updates the travis CI and bumps PHP version

Author: vicgonvt

.travis.yml

@@ -7,9 +7,6 @@ env:
 matrix:
   fast_finish: true
   include:
-    - php: 7.1
-    - php: 7.1
-      env: setup=lowest
     - php: 7.2
     - php: 7.2
       env: setup=lowest

composer.json

@@ -9,7 +9,8 @@
         }
     ],
     "require": {
-        "ext-json": "*"
+        "ext-json": "*",
+        "php": "^7.2"
     },
     "require-dev": {
         "orchestra/testbench": "^5.0"