You can upload your applications to Google play by Intel XDK , you don't need any tool create keystore. The steps are as follows:
In Building setting -> APP ID : Can not be empty. You set your APP ID. Example: com.androi.yourapplicationname
Author : Yourname
You save APP ID and Author.
Build application and upload to google play
When you update version for application, you must remember APP ID and Author. Besides,The Version Code (in Bulid setting) of the updated app needs to be greater than that of the preloaded app