Option to use http for those running behind an https proxy

[rummyr]

An option to use http instead of https would be nice for those of us that have an https proxy facing the internet.

[DeanCording]

I'm currently updating this node to use the version 2.0 API so I'll add the option.

[armdan]

cant waith for the option

[vkhurana]

I submitted a PR for adding HTTP support, would be great if @DeanCording can take a look, and provide feedback.