Support to_command_value calling into Jason.encode!

Author: gaggle

lib/command_utils.ex

@@ -2,4 +2,6 @@ defmodule ElixirScript.CommandUtils do
   def to_command_value(nil), do: ""
 
   def to_command_value(input) when is_binary(input), do: input
+
+  def to_command_value(input), do: Jason.encode!(input)
 end