Source Url feature && Windows fix
You can now decide which nats streaming version you want and from which source you want to get it for each operating system. Doesn't matter if http or file system. This library has no longer the binary with it, as its too dirty to do extra programming just for windows. You also could start nats without streaming but i am not sure about the parameters then. This library will download nats from config or custom config if its not already in temp dir.
#22 There were always problems with windows with file permissions and copying from resource file. The resource path was always way different on windows for some reasons.