Upgrade app from play store

Hi All,

This is my first post (query) i hope i will get good response.
Currently i am using ionic framework in visual studio - 2015. I developed an app which is in play store now.
People’s are using it but the problem is that whenever i made any changes or enhance the feature and upload it to the play store, i need to notify all the users to uninstall and re-install the app, new version is on live.
So i need a solution to some king of popup which let my user notify that new update is available.
I can solve this problem with the help of push notification but i come across " new Ionic.Deploy() ".
I need ur help guys how can i solve this problem.

Thanks in Advance.