http://www.holoville.com/hotween/hotweenAPI/class_holoville_1_1_h_o_tween_1_1_h_o_tween.html
Shake (object p_target, float p_duration, string p_propName, object p_fromVal, float p_shakeAmplitude=0.1f, float p_shakePeriod=0.12f)
みたいな引数。
p_shakeAmplitude・・・振り幅
p_shakePeriod・・・周期
