Added node v6 and disabled cov for precommit

.travis.yml

@@ -5,6 +5,9 @@ node_js:
 - '0.12'
 - '4'
 - '5'
+- '6'
+script:
+  - npm run ci
 env:
   global:
     secure: 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

package.json

@@ -10,7 +10,8 @@
     "pino": "./pretty.js"
   },
   "scripts": {
-    "test": "standard && tap --cov test/*test.js"
+    "test": "standard && tap test/*test.js",
+    "ci": "standard && tap --cov test/*test.js"
   },
   "precommit": "test",
   "repository": {