[UPD] Ajustes no composer, travis e scrutinizer

.scrutinizer.yml

@@ -1,6 +1,7 @@
 build:
     environment:
         php: '5.6.0'
+        php: '7.0.0'
 
 before_commands:
     - "composer install --prefer-source"

.travis.yml

@@ -2,6 +2,7 @@ language: php
 
 php:
   - 5.6
+  - 7.0
 
 before_script:
   - "composer self-update"

composer.json

@@ -25,7 +25,7 @@
         }
     ],
     "require": {
-        "php": ">=5.6.0",
+        "php": ">=5.5.0",
         "ext-dom": "*",
         "ext-xml": "*",
         "ext-libxml": "*",