fix(travis-cli): add cli to package files

Author: armano2

@commitlint/travis-cli/package.json

@@ -3,7 +3,8 @@
   "version": "8.3.5",
   "description": "Lint all relevant commits for a change or PR on Travis CI",
   "files": [
-    "lib/"
+    "lib/",
+    "cli.js"
   ],
   "bin": {
     "commitlint-travis": "./cli.js"