Update travis script

.travis.yml

@@ -3,7 +3,7 @@ node_js:
   - 'node'
   - '6'
   - '4'
-script: npm run lint && npm test
+script: npm test
 after_success: npm run coverage
 notifications:
   email:

package.json

@@ -7,8 +7,7 @@
     "node": ">=4"
   },
   "scripts": {
-    "test": "nyc ava test",
-    "lint": "xo",
+    "test": "xo && nyc ava",
     "coverage": "nyc report --reporter=text-lcov | coveralls"
   },
   "xo": {