Another composer.json update

Author: bviolier

composer.json

@@ -4,6 +4,16 @@
     "version": "1.0.0",
     "type": "library",
     "homepage": "https://github.com/messagebird/php-rest-api",
+    "license": "BSD-2-Clause",
+    "authors": [
+        {
+            "name": "MessageBird",
+            "email": "info@messagebird.com"
+        }
+    ],
+    "require": {
+        "php": ">=5.3.0"
+    },
     "autoload": {
         "psr-4": {
             "MessageBird\\": "src/MessageBird/"