chore(package): update http-signature to version 1.0.2
chore(package): update http-signature to version 1.0.2

http://greenkeeper.io/
simov/request,czardoz/request,lxe/request,watson/request,request/request,lxe/request,watson/request,Aloomaio/request,request/request,lalitkapoor/request,NewGyu/request,czardoz/request,chaoliu/request,chaoliu/request,NewGyu/request,simov/request,lalitkapoor/request,Aloomaio/request