Zuora.configure With :log => true Raises NoMethodError

[sshaw]

Using the .configure example from the README causes the following exception:

~/code/ruby/zoura-test >ruby run.rb
DEPRECATION WARNING: alias_method_chain is deprecated. Please, use Module#prepend instead. From module, you can access the original method using super. (called from require at /Users/skyes/.rvm/rubies/ruby-2.2.5/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54)
/Users/skyes/.rvm/gems/ruby-2.2.5/gems/savon-2.3.3/lib/savon/request_logger.rb:29:in `log_request': undefined method `info' for nil:NilClass (NoMethodError)
    from /Users/skyes/.rvm/gems/ruby-2.2.5/gems/savon-2.3.3/lib/savon/request_logger.rb:11:in `log'
    from /Users/skyes/.rvm/gems/ruby-2.2.5/gems/savon-2.3.3/lib/savon/operation.rb:86:in `call_with_logging'
    from /Users/skyes/.rvm/gems/ruby-2.2.5/gems/savon-2.3.3/lib/savon/operation.rb:51:in `call'
    from /Users/skyes/.rvm/gems/ruby-2.2.5/gems/savon-2.3.3/lib/savon/client.rb:36:in `call'
    from /Users/skyes/.rvm/gems/ruby-2.2.5/gems/zuora-1.0.0/lib/zuora/api.rb:105:in `authenticate!'
    from /Users/skyes/.rvm/gems/ruby-2.2.5/gems/zuora-1.0.0/lib/zuora/api.rb:85:in `request'
    from /Users/skyes/.rvm/gems/ruby-2.2.5/gems/zuora-1.0.0/lib/zuora/soap_connector.rb:11:in `query'
    from /Users/skyes/.rvm/gems/ruby-2.2.5/gems/zuora-1.0.0/lib/zuora/objects/base.rb:82:in `all'
    from run.rb:10:in `<main>'

[sshaw]

This is because we're telling Savon to log but a nil :logger option is being passed in.

Should probably just create a default STDERR logger. Using :log => true without having to create a logger is a slight convenience to the caller.