Full updates

Author: AmyStephen

composer.json

@@ -13,11 +13,11 @@
         }
     ],
     "require": {
-        "php": ">=5.3.10",
+        "php": ">=5.4",
         "commonapi/exception": ">=0.1"
     },
     "autoload": {
-        "psr-0": {
+        "psr-4": {
             "CommonApi\\Http\\": ""
         }
     }