[TASK] Add 7 Node.js stable and multiple OS tests to travis

Remove end-of-life v5

.travis.yml

@@ -3,10 +3,15 @@ sudo: false
 language: node_js
 
 node_js:
+  - "7"
   - "6"
-  - "5"
   - "4"
 
+os:
+  - linux
+  - macosx
+  - windows
+
 cache:
   directories:
     - node_modules

README.md

@@ -9,7 +9,7 @@
 - Formatted Code
 - Grunt inline for some css and js - less requests
 - Icon font with only needed icons
-- Upgrade to grunt v1.x (NodeJS 4 - 6.3+ compatible)
+- Upgrade to grunt v1.x (Tested with Node.js 4 LTS,6 LTS,7 Linux,OSX,W**)
   - Inline some css and js
 - Bower update all components
   - Load only german locale from 101 languages from moment.js