package: add standard to default test target, use npm run unit for isolation

package.json

@@ -37,7 +37,7 @@
     "coveralls": "npm run-script coverage && coveralls < coverage/lcov.info",
     "integration": "mocha --reporter list test/integration/*.js",
     "standard": "standard",
-    "test": "npm run-script unit",
+    "test": "npm run-script unit && npm run standard",
     "unit": "istanbul test mocha -- --reporter list test/*.js"
   },
   "repository": {