Support exponential notation for Money.parse

Author: Nitrino

lib/money.ex

@@ -204,6 +204,12 @@ defmodule Money do
   defp prepare_parse_string(["9" | tail], delimiter, acc),
     do: prepare_parse_string(tail, delimiter, ["9" | acc])
 
+  defp prepare_parse_string(["e" | tail], delimiter, acc),
+    do: prepare_parse_string(tail, delimiter, ["e" | acc])
+
+  defp prepare_parse_string(["E" | tail], delimiter, acc),
+    do: prepare_parse_string(tail, delimiter, ["E" | acc])
+
   defp prepare_parse_string([delimiter | tail], delimiter, acc),
     do: prepare_parse_string(tail, delimiter, ["." | acc])