Move koans to their own directory

lib/koans/equalities.ex

@@ -0,0 +1,23 @@
+defmodule Equalities do
+  use Koans
+
+  koan "We shall contemplate truth by testing reality, via equality" do
+    assert true == true
+  end
+
+  koan "To understand reality, we must compare our expectations against reality" do
+    assert 2 == 1 + 1
+  end
+
+  koan "Some things may appear different, but be the same" do
+    assert 1 == 2 / 2
+  end
+
+  koan "Something is not equal to nothing" do
+    assert !(1 == nil)
+  end
+
+  koan "When things cannot be equal, they must be different" do
+    refute :something == 4
+  end
+end

lib/koans/lists.ex

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+defmodule Lists do
+  use Koans
+
+  koan "We shall contemplate truth by testing reality, via equality" do
+    assert List.first([1, 2, 3]) == 2
+  end
+end