Merge pull request #64 from paul999/version_validation

Validate composer.json via composer standards

Author: paul999

composer.json

@@ -10,14 +10,15 @@
     ],
     "minimum-stability": "stable",
     "require": {
-        "php": ">=5.5.0",
+        "php": ">=5.5.9",
         "symfony/yaml": "~2.3|~3.0",
         "symfony/console": "~2.3|~3.0",
         "symfony/finder": "~2.3|~3.0",
         "symfony/process": "~2.3|~3.0",
         "nikic/php-parser": "~3.0",
         "gitonomy/gitlib": "0.1.*@dev",
-        "sensiolabs/ansi-to-html": "~1.1"
+        "sensiolabs/ansi-to-html": "~1.1",
+        "composer/composer": "^1.5"
     },
     "require-dev": {
         "phpunit/phpunit": "4.4.*",
@@ -27,7 +28,10 @@
         "src/EPV.php"
     ],
     "config": {
-        "bin-dir": "bin"
+        "bin-dir": "bin",
+        "platform": {
+            "php": "5.5.9"
+        }
     },
     "autoload": {
         "psr-4": {