add node.js 7 to travis

Author: sokra

.travis.yml

@@ -3,11 +3,9 @@ language: node_js
 node_js:
   - "4"
   - "6"
+  - "7"
 script: npm run travis
 
-before_install:
-  - '[ "${TRAVIS_NODE_VERSION}" != "0.10" ] || npm install -g npm'
-
 after_success:
   - cat ./coverage/lcov.info | node_modules/.bin/coveralls --verbose
   - cat ./coverage/coverage.json | node_modules/codecov.io/bin/codecov.io.js