changelog for 1.0 and set maintainers

CHANGELOG.md

@@ -0,0 +1,9 @@
+# Changelog for v1.0
+
+- Integration with Ecto 2.0
+  If you encounter any compiler or deprecation warnings related to Ecto 2.0,
+  please create an issue for it.
+
+- Support for native Postgres Enum. We make use of Postgres' user-defined types
+
+- [Helper functions for migrations](https://github.com/gjaldon/ecto_enum#reflection).

mix.exs

@@ -20,7 +20,7 @@ defmodule EctoEnum.Mixfile do
   defp test_paths(_), do: ["test/pg"]
 
   defp package do
-    [contributors: ["Gabriel Jaldon"],
+    [maintainers: ["Gabriel Jaldon"],
      licenses: ["MIT"],
      links: %{github: "https://github.com/gjaldon/ecto_enum"},
      files: ~w(mix.exs README.md CHANGELOG.md lib)]