Update branch alias to 2.7 alpha

JeroenDeDauw · JeroenDeDauw · commit f4ced16808d2 · 2015-03-12T00:32:46.000+01:00
[skip ci]
diff --git a/composer.json b/composer.json
@@ -40,7 +40,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "2.6.x-dev"
+			"dev-master": "2.7.x-dev"
 		}
 	},
 	"scripts": {
