Bump version to 0.5.4

Author: warmwaffles

README.md

@@ -16,7 +16,7 @@ in Hexdocs.
 
 ```elixir
 defp deps do
-  {:ecto_sqlite3, "~> 0.5.3"}
+  {:ecto_sqlite3, "~> 0.5.4"}
 end
 ```
 

mix.exs

@@ -1,10 +1,12 @@
 defmodule EctoSQLite3.MixProject do
   use Mix.Project
 
+  @version "0.5.4"
+
   def project do
     [
       app: :ecto_sqlite3,
-      version: "0.5.3",
+      version: @version,
       elixir: "~> 1.8",
       start_permanent: Mix.env() == :prod,
       source_url: "https://github.com/elixir-sqlite/ecto_sqlite3",
@@ -48,7 +50,7 @@ defmodule EctoSQLite3.MixProject do
   end
 
   defp description do
-    "A SQLite3 Ecto3 adapter."
+    "An SQLite3 Ecto3 adapter."
   end
 
   defp package do
@@ -71,7 +73,9 @@ defmodule EctoSQLite3.MixProject do
 
   defp docs do
     [
-      main: "Ecto.Adapters.SQLite3"
+      main: "Ecto.Adapters.SQLite3",
+      source_ref: "v#{@version}",
+      source_url: "https://github.com/elixir-sqlite/ecto_sqlite3"
     ]
   end