Add some basic code

lib/elixir_rss.ex

@@ -0,0 +1,18 @@
+defmodule ElixirRss do
+  @moduledoc """
+  Documentation for `ElixirRss`.
+  """
+
+  @doc """
+  Hello world.
+
+  ## Examples
+
+      iex> ElixirRss.hello()
+      :world
+
+  """
+  def hello do
+    :world
+  end
+end

lib/fetch_rss.ex

@@ -0,0 +1,14 @@
+defmodule ElixirRss.Fetch do
+  def fetch(url) do
+    url
+    |> HTTPoison.get()
+    |> handle_response()
+  end
+
+  defp handle_response({:ok, %{status_code: 200, body: body}}) do
+    {:ok, body}
+  end
+  defp handle_response({_, %{status_code: _, body: body}}) do
+    {:error, body}
+  end
+end