update testcase

test/slow/nvm reinstall-packages/test-npmlink/index.js

@@ -0,0 +1,2 @@
+#!/usr/bin/env node
+console.log('ok')

test/slow/nvm reinstall-packages/test-npmlink/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "test-npmlink",
+  "version": "0.0.1",
+  "description": "Stub package for testing npm link",
+  "bin": {
+    "test-npmlink": "index.js"
+  },
+  "author": "hax",
+  "license": "ISC"
+}