add link to coding standards wiki page to README
add link to coding standards wiki page to README

flodolo/transvision,pascalchevrel/transvision,SkySymbol/transvision,TheoChevalier/transvision,pascalchevrel/transvision,flodolo/transvision,mozfr/transvision,TheoChevalier/transvision,TheoChevalier/transvision,SkySymbol/transvision,pascalchevrel/transvision,SkySymbol/transvision,flodolo/transvision,flodolo/transvision,mozfr/transvision,mozfr/transvision,SkySymbol/transvision,pascalchevrel/transvision,mozfr/transvision,TheoChevalier/transvision