elixir.diff

diff --git a/lib/list.ex b/lib/list.ex
index 75778f7..10d6cf7 100644
--- a/lib/list.ex
+++ b/lib/list.ex
@@ -1,5 +1,13 @@
 object List
-  def +(another)
+  % Returns a new list with the contents of the
+  % current list and the other list.
+  %
+  % ## Examples
+  %
+  %     [1,2,3] + [4,5,6] %=> [1,2,3,4,5,6]
+  %     [1,2,3] + [1,2,3] %=> [1,2,3,1,2,3]
+  %
+def +(another)
     Erlang.lists.append(self, another)
   end
 
diff --git a/test/elixir/list_test.ex b/test/elixir/list_test.ex
index 5a369f0..bd79a0b 100644
--- a/test/elixir/list_test.ex
+++ b/test/elixir/list_test.ex
@@ -6,4 +6,11 @@ object ListTest < ExUnit::Case
     true  = list.member?(1)
     false = list.member?(4)
   end
+
+  def add_two_lists_together_test
+    list_one = [1,2,3]
+    list_two = [4,5,6]
+    [1,2,3,4,5,6] = list_one + list_two
+    [1,2,3,1,2,3] = list_one + list_one
+  end
 end
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