When Hugo seems to disappear, just reinstall and then continue normally (#82)

should fix #81 (or at least mitigate it)

package.json

@@ -17,6 +17,7 @@
   "files": [
     "index.js",
     "index.d.ts",
+    "postinstall.js",
     "lib"
   ],
   "bin": {
@@ -33,11 +34,12 @@
   },
   "devDependencies": {
     "@jakejarvis/eslint-config": "*",
+    "del": "^6.0.0",
     "eslint": "^8.1.0",
     "mocha": "^9.1.3"
   },
   "scripts": {
-    "postinstall": "node lib/install.js",
+    "postinstall": "node postinstall.js",
     "test": "eslint . && mocha"
   },
   "engines": {