Corrects Composer Requirements to PHP 5.4.19 or Greater

Signed-off-by: Justin Yost <justin.yost@yostivanich.com>

Author: justinyost

composer.json

@@ -20,7 +20,7 @@
     "source": "https://github.com/loadsys/CakePHP-ConfigReadShell"
   },
   "require": {
-    "php": ">=5.4.16",
+    "php": ">=5.4.19",
     "composer/installers": "*"
   },
   "extra": {