FlyMeToTheMun 2.1

function FlyMeToTheMunDriver(lat, lon)
    print "Launching..."
    mechjeb.launchTo(125000, 0)
    wait(mechjeb.free)
    mechjeb.autoStageActivate()
    print "TMI..."
    mechjeb.transfer("Mun", 200000)
    wait(mechjeb.free)
    print "Warping to SoI..."
    mechjeb.warpToEvent("soi")
    wait(mechjeb.free)
    print "Warping to Pe..."
    mechjeb.warpToEvent("pe", 30)
    wait(mechjeb.free)
    print "Circularizing orbit..."
    mechjeb.circularize()
    wait(mechjeb.free)
    print "Landing..."
    if (lat == nil or lon == nil) then
        mechjeb.landAt(0, 0)
    else
        mechjeb.landAt(lat, lon)
    end
    wait(mechjeb.free)
    mechjeb.autoStageDeactivate()
    print "Landed!"
end

function FlyMeToTheMun(lat, lon)
    local co = coroutine.create(FlyMeToTheMunDriver)
    coroutine.resume(co, lat, lon)
end

print "Usage: FlyMeToTheMun(lat, lon)"