Add keywords to package.json

Author: dalelotts

package.json

@@ -2,6 +2,16 @@
   "name": "angular-bootstrap-datetimepicker",
   "version": "0.3.15",
   "description": "This directive allows you to add a datetime-picker to your form elements.",
+  "keywords": [
+    "anguar",
+    "calendar",
+    "date picker",
+    "date",
+    "directive",
+    "moment",
+    "time picker",
+    "time"
+  ],
   "author": "https://github.com/dalelotts/ng-bootstrap-datetimepicker/graphs/contributors",
   "bugs": {
     "url": "https://github.com/dalelotts/ng-bootstrap-datetimepicker/issues"