Environment to choose while making request to Gateway.

[arjun289]

Currently, the support is to set the mode as "test" or "prod" for 'sandbox' or 'live' account in the global config of application with respect to a gateway. By default if no mode is set then the "test" mode is used.

config :gringotts, :global_config,
  mode: :test 

But, this configuration should be made mandatory and a compile time exception should be raised if the field is not set.

[oyeb]

Closing as this being tracked in #49