move src/main.js to index.js to fix import errors

Author: nerdoc

src/main.js renamed to index.js

@@ -5,10 +5,9 @@
   "author": "Christian González <[email protected]>",
   "scripts": {
     "serve": "vue-cli-service serve",
-    "build": "vue-cli-service build",
-    "build-lib": "vue-cli-service build --target lib --name vue-extensionpoints src/main.js",
+    "build": "vue-cli-service build --target lib --name vue-extensionpoints index.js",
     "lint": "vue-cli-service lint",
-    "prepublish": "npm run lint  && npm run build-lib"
+    "prepublish": "npm run lint && npm run build"
   },
   "repository": {
     "type": "git",