Merge pull request #6 from lerni/master

Update composer dependency for abandoned package

composer.json

@@ -11,6 +11,6 @@
 	],
 	"require": {
 		"composer/installers": "~1.0",
-		"silverstripe-australia/gridfieldextensions": "~1.0"
+		"symbiote/silverstripe-gridfieldextensions": "~1.0"
 	}
 }