Merge pull request #10 from temp/fix-errors

fix version contraints

Author: pl-github

composer.json

@@ -19,11 +19,12 @@
         }
     ],
     "require": {
-        "php": ">=5.5.0",
+        "php": ">=5.4.0",
         "psr/log": "~1.0",
         "symfony/process": "~2.3"
     },
     "require-dev": {
+        "php": ">=5.5.0",
         "phpunit/phpunit": "~4.5"
     },
     "autoload": {