Bump patch version for miscellaneous fixes

Just a regular ol' maintenance release:

- fixed deprecation warnings in Elixir 1.5

- bumped combine to the latest version due to a reported dependency
  issue

mix.exs

@@ -3,7 +3,7 @@ defmodule RemoteIp.Mixfile do
 
   def project do
     [app: :remote_ip,
-     version: "0.1.3",
+     version: "0.1.4",
      elixir: "~> 1.3",
      package: package(),
      description: description(),