😒 chore: Add travis script.

Author: make-github-pseudonymous-again

package.json

@@ -79,7 +79,8 @@
     "release": "np",
     "test": "ava",
     "lint": "xo",
-    "dev": "npm run lint -- --fix && npm run cover -- -- -st --fail-fast"
+    "dev": "npm run lint -- --fix && npm run cover -- -- -st --fail-fast",
+    "travis": "npm run lint && npm run cover"
   },
   "sideEffects": false,
   "xo": {