testling: test chrome 4+ and firefox 3+
testling: test chrome 4+ and firefox 3+

feross/buffer,kawanet/buffer,feross/buffer,SAGV/buffer,btd/buffer,loon3/buffer,nolanlawson/buffer,mafintosh/buffer,kawanet/buffer,nolanlawson/buffer,beni55/buffer,loon3/buffer,LiuDeng/buffer,LiuDeng/buffer,LinusU/buffer,feross/buffer,jessetane/buffer,beni55/buffer,SAGV/buffer,btd/buffer,mafintosh/buffer,LinusU/buffer