Minor formatting tweaks

Add data mapping for gears for AT cars (#15)

Added the Pedders 17.5 mm rear ARB

Provide the stiffness of the Mann bar claimed by Karcepts

Make similar changes to the table about rear ARBs

List manufacturer-quoted stiffness rather than trying to guess the absolute stiffness for front ARBs.

Minor clarification

Add info on TPMS in markets using kPa, neutral and reverse gears

Add the part number for front Centric rotors

Mention Endless MX72/MX72+

Add recommendations to cool down brakes (#12)

Add details on how to decode TPMS data on EU cars

Make it easier to track donations

Make it easier to track donations

Add the exact model number for the Eibach spacer kit