I asked a mechanic once, its not that simple.
You see for an electric start option, you need to install an electric starter motor - and since there is no space around the engine, a hardcore transplant involving drilling holes into the engine covers is required. The end result will be probably ugly, not to mention making the bike a bit more heavier due to the additional few KGs of the starter motor.
Secondly since its not a genuine company installation - water may seep into the parts during rains or when washing the bike - so its a pure hassle.
I'm just sayin' (A)