adjusting travis config

.travis.yml

@@ -1,6 +1,17 @@
 language: node_js
-node_js:
-  - "7"
-cache:
-  directories:
-    - "node_modules"
+node_js: "node"
+git:
+  depth: 3
+addons:
+  apt:
+    sources:
+      - ubuntu-toolchain-r-test
+    packages:
+      - libstdc++-4.9-dev
+before_script:
+  - npm install
+  - npm install codeclimate-test-reporter istanbul -g
+script:
+  - istanbul cover "./node_modules/mocha/bin/_mocha" --report lcovonly --print detail -- -R spec
+after_success:
+  - codeclimate-test-reporter < ./coverage/lcov.info