Use nodenv via npm for testing

Author: jasonkarns

.gitignore

@@ -1,3 +1,2 @@
 /node_modules
-test/nodenv/
 /nodenv-nodenv-package-json-engine-*.tgz

package-lock.json

@@ -27,15 +27,15 @@
   ],
   "scripts": {
     "lint": "git ls-files bin etc libexec test/*.bash | xargs shellcheck",
-    "pretest": "[ -d $npm_package_directories_testnodenv ] || git clone --quiet --depth 1 https://github.com/nodenv/nodenv $npm_package_directories_testnodenv",
-    "test": "PATH=$PWD/$npm_package_directories_testnodenv/bin:$PATH bats ${CI:+--tap} test",
+    "test": "bats ${CI:+--tap} test",
     "posttest": "npm run lint",
     "postversion": "npm publish",
     "prepublishOnly": "npm run publish:github && npm run publish:brew",
     "publish:brew": "brew-publish",
     "publish:github": "git push --follow-tags"
   },
   "devDependencies": {
+    "@nodenv/nodenv": "^1.1.2",
     "bats": "^0.4.2",
     "brew-publish": "^2.3.1"
   },