diff --git a/.formatter.exs b/.formatter.exs
new file mode 100644
index 0000000..525446d
--- /dev/null
+++ b/.formatter.exs
@@ -0,0 +1,4 @@
+# Used by "mix format"
+[
+  inputs: ["mix.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]
diff --git a/lib/remix.ex b/lib/remix.ex
index 3915d2d..8a35f4d 100644
--- a/lib/remix.ex
+++ b/lib/remix.ex
@@ -28,20 +28,25 @@ defmodule Remix do
     def handle_info(:poll_and_reload, state) do
       paths = Application.get_all_env(:remix)[:paths]
 
-      new_state = Map.new paths, fn (path) ->
-        current_mtime = get_current_mtime path
-        last_mtime = case Map.fetch(state, path) do
-          {:ok, val} -> val
-          :error -> nil
-        end
-        handle_path path, current_mtime, last_mtime
-      end
+      new_state =
+        Map.new(paths, fn path ->
+          current_mtime = get_current_mtime(path)
+
+          last_mtime =
+            case Map.fetch(state, path) do
+              {:ok, val} -> val
+              :error -> nil
+            end
+
+          handle_path(path, current_mtime, last_mtime)
+        end)
 
       Process.send_after(__MODULE__, :poll_and_reload, 1000)
       {:noreply, new_state}
     end
 
     def handle_path(path, current_mtime, current_mtime), do: {path, current_mtime}
+
     def handle_path(path, current_mtime, _) do
       comp_elixir = fn -> Mix.Tasks.Compile.Elixir.run(["--ignore-module-conflict"]) end
       comp_escript = fn -> Mix.Tasks.Escript.Build.run([]) end
@@ -49,39 +54,44 @@ defmodule Remix do
       case Application.get_all_env(:remix)[:silent] do
         true ->
           ExUnit.CaptureIO.capture_io(comp_elixir)
+
           if Application.get_all_env(:remix)[:escript] == true do
             ExUnit.CaptureIO.capture_io(comp_escript)
           end
 
         _ ->
           comp_elixir.()
+
           if Application.get_all_env(:remix)[:escript] == true do
             comp_escript.()
           end
       end
+
       {path, current_mtime}
     end
 
     def get_current_mtime(dir) do
       case File.ls(dir) do
         {:ok, files} -> get_current_mtime(files, [], dir)
-        _            -> nil
+        _ -> nil
       end
     end
 
     def get_current_mtime([], mtimes, _cwd) do
       mtimes
-        |> Enum.sort
-        |> Enum.reverse
-        |> List.first
+      |> Enum.sort()
+      |> Enum.reverse()
+      |> List.first()
     end
 
     def get_current_mtime([h | tail], mtimes, cwd) do
-      mtime = case File.dir?("#{cwd}/#{h}") do
-        true  -> get_current_mtime("#{cwd}/#{h}")
-        false -> File.stat!("#{cwd}/#{h}").mtime
-      end
-      get_current_mtime tail, [mtime | mtimes], cwd
+      mtime =
+        case File.dir?("#{cwd}/#{h}") do
+          true -> get_current_mtime("#{cwd}/#{h}")
+          false -> File.stat!("#{cwd}/#{h}").mtime
+        end
+
+      get_current_mtime(tail, [mtime | mtimes], cwd)
     end
   end
 end
diff --git a/mix.exs b/mix.exs
index 5e13298..452f108 100644
--- a/mix.exs
+++ b/mix.exs
@@ -2,17 +2,18 @@ defmodule Remix.Mixfile do
   use Mix.Project
 
   def project do
-    [app: :remix,
-     version: "0.0.2",
-     elixir: "~> 1.0",
-     package: package,
-     description: description,
-     deps: deps]
+    [
+      app: :remix,
+      version: "0.0.2",
+      elixir: "~> 1.0",
+      package: package(),
+      description: description(),
+      deps: deps()
+    ]
   end
 
   def application do
-    [applications: [:logger],
-     mod: {Remix, []}]
+    [applications: [:logger], mod: {Remix, []}]
   end
 
   defp deps, do: []