Prepare 2.0.0 final release. (#187)

Author: scouten

README.md

@@ -99,7 +99,7 @@ Add `sqlite_ecto2` as a dependency in your `mix.exs` file.
 
 ```elixir
 def deps do
-  [{:sqlite_ecto2, "~> 2.0.0-dev.8"}]
+  [{:sqlite_ecto2, "~> 2.0"}]
 end
 ```
 

mix.exs

@@ -3,7 +3,7 @@ defmodule Sqlite.Ecto2.Mixfile do
 
   def project do
     [app: :sqlite_ecto2,
-     version: "2.0.0-dev.8",
+     version: "2.0.0",
      name: "Sqlite.Ecto2",
      elixir: "~> 1.3.4 or ~> 1.4",
      elixirc_options: [warnings_as_errors: true],