remove redundant HttpStreamingResponse.new call

This local variable is redefined next in code, so this assignment looks redundant
Merge pull request #39 from Mik-die/patch-1

remove redundant HttpStreamingResponse.new call
Join multiple headers instead of dropping them
Merge pull request #42 from binaryseed/binaryseed/join-multiple-headers

Join multiple headers instead of dropping them
Bump revision