Update mix deps

mix.exs

@@ -32,7 +32,7 @@ defmodule Callum.Mixfile do
       {:phoenix_html, "~> 2.3"},
       {:phoenix_live_reload, "~> 1.0", only: :dev},
       {:gettext, "~> 0.9"},
-      {:httpoison, "~> 0.8.1"},
+      {:httpoison, "~> 0.8"},
       {:timex, "~> 1.0.0"},
       {:cowboy, "~> 1.0"},
       {:ex_machina, "~> 0.6.1", only: :test}

mix.lock

@@ -1,4 +1,4 @@
-%{"certifi": {:hex, :certifi, "0.3.0"},
+%{"certifi": {:hex, :certifi, "0.4.0"},
   "combine": {:hex, :combine, "0.7.0"},
   "connection": {:hex, :connection, "1.0.2"},
   "cowboy": {:hex, :cowboy, "1.0.4"},
@@ -9,19 +9,21 @@
   "ex_machina": {:hex, :ex_machina, "0.6.1"},
   "fs": {:hex, :fs, "0.9.2"},
   "gettext": {:hex, :gettext, "0.10.0"},
-  "hackney": {:hex, :hackney, "1.4.8"},
-  "httpoison": {:hex, :httpoison, "0.8.1"},
-  "idna": {:hex, :idna, "1.0.3"},
+  "hackney": {:hex, :hackney, "1.5.7"},
+  "httpoison": {:hex, :httpoison, "0.8.2"},
+  "idna": {:hex, :idna, "1.2.0"},
+  "metrics": {:hex, :metrics, "1.0.1"},
   "mimerl": {:hex, :mimerl, "1.0.2"},
   "phoenix": {:hex, :phoenix, "1.1.4"},
   "phoenix_ecto": {:hex, :phoenix_ecto, "3.0.0-beta.1"},
-  "phoenix_html": {:hex, :phoenix_html, "2.5.0"},
+  "phoenix_html": {:hex, :phoenix_html, "2.5.1"},
   "phoenix_live_reload": {:hex, :phoenix_live_reload, "1.0.3"},
-  "plug": {:hex, :plug, "1.1.2"},
+  "plug": {:hex, :plug, "1.1.3"},
   "poison": {:hex, :poison, "2.1.0"},
   "poolboy": {:hex, :poolboy, "1.5.1"},
   "postgrex": {:hex, :postgrex, "0.11.1"},
   "ranch": {:hex, :ranch, "1.2.1"},
+  "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.0"},
   "ssl_verify_hostname": {:hex, :ssl_verify_hostname, "1.0.5"},
   "timex": {:hex, :timex, "1.0.1"},
   "tzdata": {:hex, :tzdata, "0.5.6"}}