Updated deps

- Use `^5.5 || ^7.0` for PHP version.
- Use `^4.8` for PHPUnit version.

Author: weierophinney

.travis.yml

@@ -36,7 +36,6 @@ matrix:
     - php: 7
     - php: hhvm 
   allow_failures:
-    - php: 7
     - php: hhvm
 
 notifications:

composer.json

@@ -13,7 +13,7 @@
         }
     },
     "require": {
-        "php": ">=5.5"
+        "php": "^5.5 || ^7.0"
     },
     "minimum-stability": "dev",
     "prefer-stable": true,
@@ -30,6 +30,6 @@
     },
     "require-dev": {
         "fabpot/php-cs-fixer": "1.7.*",
-        "phpunit/PHPUnit": "~4.0"
+        "phpunit/PHPUnit": "^4.8"
     }
-}
+}