Install OpenGApps in Android Studio Emulator (Marshmallow)
I suggest using Genymotion for all your emulator needs.
After getting Genymotion set up with emulated device of choice, download ARM translation and GAPPS.
Those files come in a .zip format, do not unpack them!

I would have normally installed ARM Translation which will let those ARM apps be able to run on this x86 virtual device. Afterwards Install GAPPS (make sure to use appropriate version for the system you are building). 
To install the above mentioned files I have used the drag and drop technique. Restart the device when done.
 Hope this helps