update package.json for CLI compatibility

Author: PeterStaev

sample/GridViewSample/.abproject

@@ -2,7 +2,7 @@
   "ProjectName": "GridViewSample",
   "ProjectGuid": "0c581aae-e414-4965-b372-c3a67d0dd821",
   "projectVersion": 1,
-  "AppIdentifier": "net.tangrainc.GridViewSample",
+  "AppIdentifier": "net.tangrainc.gridviewsample",
   "DisplayName": "GridViewSample",
   "Author": "",
   "Description": "GridViewSample",

sample/GridViewSample/package.json

@@ -1,5 +1,13 @@
 {
-  "nativescript": {},
+  "nativescript": {
+	"id": "net.tangrainc.gridviewsample",
+	"tns-ios": {
+		"version": "1.5.1"
+	},
+	"tns-android": {
+		"version": "1.5.1"
+	}
+  },
   "dependencies": {
     "tns-core-modules": "1.5.1",
     "nativescript-grid-view": "1.2.1"