Merge pull request #171 from wkirschbaum/master

Fix exclude_protocol_implementation check for Jason.Encoder

Author: kipcole9

lib/money/protocol/jason.ex

@@ -1,10 +1,10 @@
 if Cldr.Config.ensure_compiled?(Jason) &&
-    !Money.exclude_protocol_implementation(Json.Encoder) do
+     !Money.exclude_protocol_implementation(Jason.Encoder) do
   defimpl Jason.Encoder, for: Money do
     def encode(struct, opts) do
       struct
       |> Map.take([:currency, :amount])
       |> Jason.Encode.map(opts)
     end
   end
-end
+end