Test with 4.2 (LTS) and 5.5 (Stable)
diff --git a/.travis.yml b/.travis.yml
index 7de7b97..b4e876a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,8 @@
   - "0.11"
   - "0.12"
   - "iojs"
+  - "4.2"
+  - "node"
 services:
   - couchdb
 os: