Add project description in package.json

package.json

+{
+  "name": "TugasBesar3_2017",
+  "version": "0.1",
+  "description": "PR-OJEK: Have a nice trip!",
+  "main": "index.js",
+  "repository": "http://gitlab.informatika.org/IF3110-2017-K02-AMEN/TugasBesar3_2017",
+  "author": "AMEN",
+  "license": "MIT",
+  "private": true
+}