Please fix functions.lua and Cocos2d.lua

cocos2d-x Lua
#1

radian2angle is wrong in functions.lua
pGetAngle is also wrong in Cocos2d.lua

radian2angle should be r * 180 / math.pi
pGetAngle should be math.atan2(p1.y - p2.y, p1.x - p2.x)

This is very frustrating.

tested code

function math.radian2angle(radian)
    return radian * 180 / math.pi
end

function cc.pGetAngle(p1, p2)
    return math.atan2(p2.y - p1.y, p2.x - p1.x)
end

Andre