Fix module scoping issue
Fix module scoping issue

By dynamically setting constants when scopes or associations were
created, it was causing more trouble than it was worth, especially when
libraries were available that defined the same constant name in a global
scope.

This fixes #76.

Signed-off-by: Stephen Celis <06fa905d7f2aaced6dc72e9511c71a2a51e8aead@stephencelis.com>

SupportPay/recurly-ruby,SupportPay/recurly-ruby,SupportPay/RecurlyDemoNew,SupportPay/RecurlyDemoNew