add .formatter.exs + format

lib/watcher.ex

@@ -2,7 +2,7 @@ defmodule Watcher do
   use GenServer
 
   def start_link() do
-    GenServer.start_link(__MODULE__, [dirs: ["lib/koans"]])
+    GenServer.start_link(__MODULE__, dirs: ["lib/koans"])
   end
 
   def init(args) do
@@ -11,10 +11,11 @@ defmodule Watcher do
     {:ok, %{watcher_pid: watcher_pid}}
   end
 
-  def handle_info({:file_event, watcher_pid, {path, events}}, %{watcher_pid: watcher_pid}=state) do
+  def handle_info({:file_event, watcher_pid, {path, events}}, %{watcher_pid: watcher_pid} = state) do
     if Enum.member?(events, :modified) do
       path |> normalize |> reload
     end
+
     {:noreply, state}
   end
 
@@ -22,11 +23,11 @@ defmodule Watcher do
     if Path.extname(file) == ".ex" do
       try do
         file
-        |> Code.load_file
-        |> Enum.map(&(elem(&1, 0)))
+        |> Code.load_file()
+        |> Enum.map(&elem(&1, 0))
         |> Enum.find(&Runner.koan?/1)
-        |> Runner.modules_to_run
-        |> Runner.run
+        |> Runner.modules_to_run()
+        |> Runner.run()
       rescue
         e -> Display.show_compile_error(e)
       end