example: use bin-up to find eslint

packages/example/package.json

@@ -14,7 +14,7 @@
     "deploy": "gulp deploy",
     "prerelease": "npm run build",
     "release": "releaser",
-    "lint": "../../node_modules/.bin/eslint --fix *.js bin/*.js lib/*.js test/*.js",
+    "lint": "$(bin-up eslint) --fix *.js bin/*.js lib/*.js test/*.js",
     "pretest": "npm run lint"
   },
   "author": "Brian Mann",
@@ -25,6 +25,7 @@
   },
   "devDependencies": {
     "@cypress/releaser": "0.1.12",
+    "bin-up": "^1.0.1",
     "chai": "^3.5.0",
     "gulp": "^3.9.1",
     "gulp-clean": "^0.3.1",