[Add] word_count example

Author: kmlroot

word_count.exs

@@ -0,0 +1,8 @@
+filename = IO.gets("File to count the words from: ") |> String.trim
+body = File.read! filename
+empty = fn x -> x != "" end
+count = String.split(body, ~r{(\\n|[^\w'])+})
+        |> Enum.filter(empty)
+        |> Enum.count
+
+IO.puts count