Raised version to 0.3

Author: h4cc

README.md

@@ -15,7 +15,7 @@ Add `slugger` to your list of dependencies in `mix.exs`:
 ```elixir
 def deps do
   [
-    {:slugger, "~> 0.2"},
+    {:slugger, "~> 0.3"},
   ]
 end
 ```

mix.exs

@@ -5,7 +5,7 @@ defmodule Slugger.Mixfile do
     [app: :slugger,
      name: "Slugger",
      source_url: "https://github.com/h4cc/slugger",
-     version: "0.2.0",
+     version: "0.3.0",
      elixir: "~> 1.3",
      description: description(),
      package: package(),