Fix unit-tests checks. (#2538)

* Fix unit-tests checks.
LetterSpacing handlers are added for iOS and Android API 21+

* Removed unneded check for android

* Used parseInt instead of new Number due to TSLint error

package.json

@@ -1,4 +1,7 @@
 {
+  "name": "NativeScript",
+  "description": "Telerik NativeScript Core Modules",
+  "homepage": "https://www.nativescript.org",
   "repository": {
     "type": "git",
     "url": "https://github.com/NativeScript/NativeScript"
@@ -42,4 +45,4 @@
     "test-ios": "tns run ios --path tests --justlaunch",
     "test": "npm run test-android && npm run test-ios"
   }
-}
+}