revert: revert postinstall script

fix #8

Author: floydspace

package.json

@@ -14,7 +14,6 @@
   ],
   "scripts": {
     "prepublishOnly": "npm run build",
-    "postinstall": "npm run build",
     "precommit": "npm run lint",
     "build": "npm run clean && tsc",
     "clean": "rm -rf ./dist",