Port to cowboy master
Fix missing function clause in sockjs_http:method_atom
Add HEAD clause in sockjs_http:method_atom/1
update to lastest cowboy
change rebar to actually see real errors
update cowboy_echo example to cowboy 0.8
cowboy_handler terminate now has 3 arguments instead of 2

from: terminate(_Req, _Service) ->
to:   terminate(_Reason, _Req, _Service) ->
use cowboy_req:peer for ip/port of client
update cowboy_test_server.erl to cowboy 0.8
update README.md
update usage of cowboy_req:transport to cowboy_req:get for cowboy 0.8
cowboy 0.8 has all cookies lower cased (fixes JsessionidCookie.test_xhr)