Reformat composer.json

composer.json

 {
     "name": "10gen-labs/mongo-php-library-prototype",
     "description": "phongo libraries for MongoDB",
+    "license": "BSD-2-Clause",
+    "authors": [
+        { "name": "Hannes Magnusson", "email": "bjori@mongodb.com"}
+    ],
     "require": {
         "ext-phongo": ">=0.1.2"
     },
     "require-dev": {
         "fzaninotto/faker": "~1.0"
     },
-    "license": "BSD-2-Clause",
-    "authors": [
-        {
-            "name": "Hannes Magnusson",
-            "email": "bjori@mongodb.com"
-        }
-    ],
-    "minimum-stability": "dev",
     "autoload": {
-        "psr-4": {
-            "MongoDB\\": "src/"
-        }
+        "psr-4": { "MongoDB\\": "src/" }
     }
 }