Copy of Buffer so that Nan does not free it post Nan 2.0.0
Copy of Buffer so that Nan does not free it post Nan 2.0.0

antoinepairet/lwip,fireball-x/lwip,EyalAr/lwip,fireball-x/lwip,cocos-creator/lwip,antoinepairet/lwip,mottx/lwip,antoinepairet/lwip,cocos-creator/lwip,mottx/lwip,mottx/lwip,weareu/lwip,EyalAr/lwip,weareu/lwip,fireball-x/lwip,antoinepairet/lwip,fireball-x/lwip,weareu/lwip,weareu/lwip,cocos-creator/lwip,domosapien/lwip,domosapien/lwip,cocos-creator/lwip,domosapien/lwip,mottx/lwip,EyalAr/lwip,EyalAr/lwip,domosapien/lwip