minor tweaks

.editorconfig

@@ -10,6 +10,3 @@ insert_final_newline = true
 [{package.json,*.yml}]
 indent_style = space
 indent_size = 2
-
-[*.md]
-trim_trailing_whitespace = false

.travis.yml

@@ -1,7 +1,8 @@
 sudo: false
 language: node_js
 node_js:
-  - 'iojs'
+  - '5'
+  - '4'
   - '0.12'
   - '0.10'
 after_success: npm run coveralls