Add support for episode NFO files (#84)

* Added nfo builder for 'episodes'

* Added NFO download fields; hooked up NFO generation to downloading pipeline

* Added NFO option to media profile

test/pinchflat/metadata/metadata_parser_test.exs

@@ -4,22 +4,7 @@ defmodule Pinchflat.Metadata.MetadataParserTest do
   alias Pinchflat.Metadata.MetadataParser, as: Parser
 
   setup do
-    json_filepath =
-      Path.join([
-        File.cwd!(),
-        "test",
-        "support",
-        "files",
-        "media_metadata.json"
-      ])
-
-    {:ok, file_body} = File.read(json_filepath)
-    {:ok, parsed_json} = Phoenix.json_library().decode(file_body)
-
-    {:ok,
-     %{
-       metadata: parsed_json
-     }}
+    {:ok, %{metadata: render_parsed_metadata(:media_metadata)}}
   end
 
   describe "parse_for_media_item/1 when testing media metadata" do