Centralized resource options

[Fauntleroy]

Basically what we talked about in https://github.com/SparkartGroupInc/solidus/pull/74

You have an auth.json which contains resource options to be mixed in before requests are made:

{
    "https://hipster2.sparkart.net/*": {
        "headers": {
            "key": "12345"
        }
    },
    "https://hipster3.sparkart.net/*": {
        "query": {
            "key": "12345"
        }
    }
}

And resources are defined as they always have been. You can also define resources with objects from the https://github.com/SparkartGroupInc/solidus/pull/73 branch. Possible resource options are: headers, query, and auth

[pushred]

No comments on the refactors, that all seems to make sense. Confirmed it works as expected in use with @krackydile by using this branch on the Immunity Project site he's working on.

[pushred]

Oh yeah he's also using helpers now since they're in master.