Update minimum Elixir version requirement to 1.3.0

.travis.yml

@@ -1,7 +1,6 @@
 language: elixir
 
 elixir:
-  - 1.2.6
   - 1.3.4
   - 1.4.1
   - 1.5.0

README.md

@@ -27,6 +27,8 @@ def application do
 end
 ```
 
+Note: Readability requires Elixir 1.3 or higher.
+
 ## Usage
 
 ### Examples

mix.exs

@@ -12,7 +12,7 @@ defmodule Readability.Mixfile do
   def project do
     [app: :readability,
      version: @version,
-     elixir: "~> 1.2",
+     elixir: "~> 1.3",
      description: @description,
      package: package(),
      build_embedded: Mix.env == :prod,