Addition of Exit button to rocket chat

Components

Rocket chat is the leading free, unlimited and open source team chat slack alternative,and it has features such as free audio and video conferencing, guest access, screen sharing, file sharing, LiveChat. Here is a link to download Rocketchat

Proposal

I suggest the addition of exit button to Rocket chat,and the exist button been incorporated to Rocket chat will enable user to exist the app with ease without having to press the back button on their device for several time before the app would close,so user may have to minimize the app since the cannot exist the app easily and that consume user battery since the application will still be running on the background.

Mockups / Examples

This is how Rocket chat look when user login

Here is my suggestion of addition of exit button to rocket chat,which will make the application more user friendly since users have to press a single button for the app to closed.

Benefits

The benefit of addition of exist button to Rocket chat is that it will make the app more users friendly since user have to press a button to exist the app without having to log out from the app and pressing he/her back button on their device for several time before the app will closed, also it will allow some user to save their battery,because some user who will not have the patience to tab the back button on their device for several time will have to minimize the app which consume their device battery.