Install plugins with Qt application
I have created an application and copied plugins folder in application's release folder.
Now I need guidance to install this plugins automatically with my application.
What steps should I follow and what should I include in my .pro file?
Without more information about you OS / Qt combination it's hard to tell you.
The only thing at the moment is: look for the various "Deployment Guide" targeting the OS you want.
It's in the documentation
I'm using Windows 8 and Qt 5.2.1
Once you have a deployed application i.e. get it running properly outside Qt Creator, you need to choose an installer builder either QIF, InnoSetup or NSIS (other exists) to create an installer that will handle that.