include spec and fix tiny regression

Author: benwilson512

lib/ex_aws/s3/impl.ex

@@ -185,7 +185,7 @@ defmodule ExAws.S3.Impl do
     response_opts = opts
     |> Map.take(param_keys)
     headers = opts
-    |> Map.drop(param_key)
+    |> Map.drop(param_keys)
     |> Enum.to_list
     client.request(:get, bucket, object, headers: headers, params: response_opts)
   end

mix.exs

@@ -3,7 +3,7 @@ defmodule ExAws.Mixfile do
 
   def project do
     [app: :ex_aws,
-     version: "0.1.1",
+     version: "0.1.2",
      elixir: "~> 1.0",
      description: "AWS client. Currently supports Dynamo, Kinesis, Lambda, S3",
      name: "ExAws",

test/lib/ex_aws/s3_test.exs

@@ -16,7 +16,7 @@ defmodule ExAws.S3Test do
   alias Test.Dummy.S3
 
   test "#get_object" do
-    expected = %{headers: %{response: %{content_type: "application/json"}}, params: %{},
+    expected = %{headers: [response: %{content_type: "application/json"}], params: %{},
       path: "object.json", bucket: "bucket"}
     assert expected == S3.get_object("bucket", "object.json", %{response: %{content_type: "application/json"}})
   end