Some readability edits to build instructions
Some readability edits to build instructions

I was following the Linux ones and of course I missed the `cmake` dependency. Getting rid of the "Common prerequisites" section and inlining it everywhere.

tijoytom/corert,krytarowski/corert,kyulee1/corert,yizhang82/corert,manu-silicon/corert,sandreenko/corert,shrah/corert,gregkalapos/corert,mjp41/corert,manu-silicon/corert,mjp41/corert,sandreenko/corert,botaberg/corert,manu-silicon/corert,gregkalapos/corert,kyulee1/corert,mjp41/corert,shrah/corert,gregkalapos/corert,shrah/corert,tijoytom/corert,shrah/corert,yizhang82/corert,mjp41/corert,krytarowski/corert,mjp41/corert,botaberg/corert,botaberg/corert,sandreenko/corert,manu-silicon/corert,manu-silicon/corert,tijoytom/corert,yizhang82/corert,kyulee1/corert,botaberg/corert,sandreenko/corert,krytarowski/corert,krytarowski/corert,gregkalapos/corert,tijoytom/corert,kyulee1/corert,yizhang82/corert