Reworked the contributing guide a bit
Reworked the contributing guide a bit

A lot of the stuff in it was rather blunt.

YorickPeterse/oga,YorickPeterse/oga,YorickPeterse/oga,YorickPeterse/oga,ttasanen/oga,ttasanen/oga,ttasanen/oga,ttasanen/oga,YorickPeterse/oga,ttasanen/oga