:error atom returning when trying to `put`.

[simonfl3tcher]

I am trying to create an index and then add a document to that index. However, when I run Tirexs.HTTP.put("/my-index-name") it simply returns an atom of :error. I have tried to use put! to discover more, but it returns the following error:

** (FunctionClauseError) no function clause matching in Tirexs.HTTP.ok!/1
    (tirexs) lib/tirexs/http.ex:320: Tirexs.HTTP.ok!(:error)

Running Tirexs.ENV.default_uri_env returns:

%URI{authority: "127.0.0.1:9200", fragment: nil, host: "127.0.0.1", path: nil,
 port: 9200, query: nil, scheme: "http", userinfo: nil}

Specs:

Elixir 1.4.1
Erlang/OTP 19

I think I know the problem (it is not connecting to the ES service), but it would be good to see some form of error message to clarify my suspicions. Is there any way that I can do that? If not, I would be happy to take a look at how we could return some information in this error.