Update for version

logical-and · logical-and · commit 8199fb5d5e67 · 2015-04-15T22:54:19.000+03:00
diff --git a/composer.json b/composer.json
@@ -53,8 +53,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "0.5-dev",
-            "dev-phpunit": "0.6-dev"
+            "dev-master": "0.6-dev"
         }
     }
 }
