Fix for https://github.com/mcavage/node-restify/issues/158 charSet does not gets set.
Fix for https://github.com/mcavage/node-restify/issues/158
charSet does not gets set.

prasmussen/node-restify,rborn/node-restify,uWhisp/node-restify,ferhatsb/node-restify,TheDeveloper/node-restify,adunkman/node-restify,jclulow/node-restify,kevinykchan/node-restify,chaordic/node-restify