support 1.5 and 2.x poison

Author: Sam Seay

.gitignore

@@ -1,3 +1,4 @@
 /_build
 erl_crash.dump
 /deps
+/doc

lib/recaptcha.ex

@@ -41,7 +41,7 @@ defmodule Recaptcha do
         {:error, Enum.map(errors, fn(error) -> atomise_api_error(error) end)}
       {:ok, %{"success" => true, "challenge_ts" => timestamp, "hostname" => host}} ->
         {:ok, %Recaptcha.Response{challenge_ts: timestamp, hostname: host}}
-      {:ok, %{"success" => false, "challenge_ts" => timestamp, "hostname" => host}} ->
+      {:ok, %{"success" => false, "challenge_ts" => _timestamp, "hostname" => _host}} ->
         {:error, [:challenge_failed]}
     end
   end

mix.exs

@@ -3,7 +3,7 @@ defmodule Recaptcha.Mixfile do
 
   def project do
     [app: :recaptcha,
-     version: "2.0.0",
+     version: "2.0.1",
      elixir: "~> 1.2",
      description: description,
      deps: deps,
@@ -24,7 +24,7 @@ defmodule Recaptcha.Mixfile do
   defp deps do
     [
       {:httpoison, "~> 0.9.0"},
-      {:poison, "~> 2.0"},
+      {:poison, "~> 1.5 or ~> 2.0"},
       {:credo, "~> 0.4", only: [:dev, :test]},
       {:ex_doc, ">= 0.0.0", only: :dev}
     ]