2.6.0 readiness

Updated branch aliases:

- dev-master: 2.6-dev
- dev-develop: 2.7-dev

Author: weierophinney

composer.json

@@ -9,8 +9,8 @@
     "homepage": "https://github.com/zendframework/zend-text",
     "extra": {
         "branch-alias": {
-            "dev-master": "2.5-dev",
-            "dev-develop": "2.6-dev"
+            "dev-master": "2.6-dev",
+            "dev-develop": "2.7-dev"
         }
     },
     "require": {