fix(package): add the description fields

package.json

@@ -1,6 +1,16 @@
 {
   "name": "ng2-admin",
   "version": "0.9.0",
+  "description": "Angular 2 and Bootstrap 4 Admin Template.",
+  "author": "Akveo <[email protected]>",
+  "homepage": "http://akveo.github.io/ng2-admin/",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/akveo/ng2-admin.git"
+  },
+  "bugs": {
+    "url": "https://github.com/akveo/ng2-admin/issues"
+  },
   "license": "MIT",
   "scripts": {
     "ng": "ng",