Initial data commit

Task/Semordnilap/Elixir/semordnilap.elixir

@@ -0,0 +1,7 @@
+words = File.stream!("unixdict.txt")
+        |> Enum.map(&String.strip/1)
+        |> Enum.group_by(&min(&1, String.reverse &1))
+        |> Map.values
+        |> Enum.filter(&(length &1) == 2)
+IO.puts "Semordnilap pair: #{length(words)}"
+IO.inspect Enum.take(words,5)