added source key, and support section to arraydumper

res/composer-schema.json

@@ -219,6 +219,10 @@
                 "irc": {
                     "type": "string",
                     "description": "Irc support channel"
+                },
+                "source": {
+                    "type": "string",
+                    "description": "URL to the sources"
                 }
             }
         }

src/Composer/Package/Dumper/ArrayDumper.php

@@ -36,6 +36,7 @@ class ArrayDumper
             'keywords',
             'autoload',
             'repositories',
+            'support'
         );
 
         $data = array();