Leonardo Pro Micro + MPU-6050, Newbie help, issue setting up.

Hey i'm trying to use a Leonardo Pro Micro with a MPU-6050 to control some servo's, diy stabilization gimbal for a camera.
This is the Pro Micro, Pro Micro 5V/16MHz ATMega32U4 Module For Arduino Leonardo + 2 Row Pin Header | eBay

Basically i'm seen how these connect to arduino uno's but the library is set up for input analog input 4 on the uno etc etc but the Pro Micro only have 3 analog inputs. So i'm not sure how to set this up with the Pro micro.

Does anyone know how to set this up and change the library to work with the Pro Micro.

I'm pretty lost so any help would be appreciated.
I know i could use a uno but weight is an issue and the Pro Micro is the smallest to work with.

Thanks!

Hey i'm trying to use a Leonardo Pro Micro

There is no such thing. There are Leonardos and there are Micros and there are Pro Minis. So, what, exactly, are you trying to use?

Click the ebay link, thats the arduino i bought.

similar to the Pro Mini except with an ATmega32U4