test: always run saucelabs test locally (#619)

I think this is a simpler approach for #619. Always run the sauce labs
tests locally. If users lack the right sauce labs credentials, they’ll
get an error and hopefully set up zuul correctly before sending a PR.

bin/test.js

@@ -1,15 +1,9 @@
 #!/usr/bin/env node
 
 var spawn = require('cross-spawn-async')
-var findNearestFile = require('find-nearest-file')
-var path = require('path')
-var userHome = require('user-home')
-var pathExists = require('path-exists')
 
-// .zuulrc logic from https://github.com/defunctzombie/zuul/blob/a0de46a5906c84b19f655c487f7c8debe938984d/bin/zuul#L384
-var zuulrcPath = findNearestFile('.zuulrc') || path.join(userHome, '.zuulrc')
-var hasSauceLabEnvVars = process.env.SAUCE_USERNAME && process.env.SAUCE_ACCESS_KEY
-var runSauceLabs = hasSauceLabEnvVars || pathExists.sync(zuulrcPath)
+var runSauceLabs = !process.env.CI ||
+  (process.env.SAUCE_USERNAME && process.env.SAUCE_ACCESS_KEY)
 
 npmRun('test-node', function () {
   npmRun('test-browser-headless', function () {

package.json

@@ -83,14 +83,12 @@
     "cross-spawn-async": "^2.0.0",
     "electron-prebuilt": "^0.36.7",
     "finalhandler": "^0.4.0",
-    "find-nearest-file": "^1.0.0",
     "run-series": "^1.0.2",
     "serve-static": "^1.9.3",
     "simple-get": "^2.0.0",
     "standard": "^6.0.1",
     "tape": "^4.0.0",
     "uglify-js": "^2.4.15",
-    "user-home": "^2.0.0",
     "zuul": "^3.0.0"
   },
   "homepage": "https://webtorrent.io",