chore: change travis script

run lint and test

package.json

@@ -9,6 +9,7 @@
     "prepublish": "in-publish && npm run test || not-in-publish",
     "test": "retire -n -p package.json && npm run build && npm run unit",
     "lint": "eslint \"*.js\" \"src/**/*.js\"",
+    "test:ci": "npm run lint && npm run test",
     "unit": "nyc --require babel-core/register mocha test/src/**"
   },
   "author": "Joe Fleming (https://github.com/w33ble)",