update floki and use explicit parsing of floki (r8#27)

Since the update of Floki to version 0.24.0 other projects get warnings
in there tests when using Floki 0.24.0 and oembed together. With this
commit the warnings will disapear because it uses the new parse_*/1
functions instead of the old Floki.parse/1 that is now depricated.

lib/oembed/providers/discoverable_provider.ex

@@ -28,7 +28,11 @@ defmodule OEmbed.DiscoverableProvider do
   defp discover(url) do
     with {:ok, %HTTPoison.Response{body: html}} <-
            HTTPoison.get(url, [], follow_redirect: true, ssl: [{:versions, [:"tlsv1.2"]}]),
-         [_ | _] = tags <- Floki.find(html, "head link[type$='json+oembed']"),
+         [_ | _] = tags <-
+           html
+           |> Floki.parse_document()
+           |> elem(1)
+           |> Floki.find("head link[type$='json+oembed']"),
          {"link", attributes, _} <- List.first(tags),
          %{"href" => href} <- Enum.into(attributes, %{}),
          oembed_url = %URI{} <- URI.merge(url, href) do

lib/oembed/providers/pinterest_provider.ex

@@ -34,7 +34,11 @@ defmodule OEmbed.PinterestProvider do
   defp get_page_type(url) do
     with {:ok, %HTTPoison.Response{body: html}} <-
            HTTPoison.get(url, [], follow_redirect: true, ssl: [{:versions, [:"tlsv1.2"]}]),
-         [_ | _] = tags <- Floki.find(html, "head meta[property='og:type']"),
+         [_ | _] = tags <-
+           html
+           |> Floki.parse_document()
+           |> elem(1)
+           |> Floki.find("head meta[property='og:type']"),
          {"meta", attributes, _} <- List.first(tags),
          %{"content" => content} <- Enum.into(attributes, %{}),
          %{"type" => type} <- Regex.named_captures(~r/^pinterestapp\:(?<type>.+)/, content) do

mix.exs

@@ -40,7 +40,7 @@ defmodule OEmbed.Mixfile do
   defp deps do
     [
       {:httpoison, ">= 0.9.0"},
-      {:floki, ">= 0.9.0"},
+      {:floki, ">= 0.24.0"},
       {:poison, ">= 1.5.0"},
       {:exconstructor, ">= 1.0.0"},
       {:exvcr, "~> 0.9", only: :test},