Fixed trailing commas in composer.json

Author: GrahamCampbell

composer.json

@@ -6,19 +6,19 @@
     "authors": [
         {
             "name": "Fabien Bourigault",
-            "email": "[email protected]",
+            "email": "[email protected]"
         },
         {
             "name": "Graham Campbell",
-            "email": "[email protected]",
+            "email": "[email protected]"
         },
         {
             "name": "Matt Humphrey",
-            "email": "[email protected]",
+            "email": "[email protected]"
         },
         {
             "name": "Miguel Piedrafita",
-            "email": "[email protected]",
+            "email": "[email protected]"
         }
     ],
     "require": {