ECHO backend module for Business::OnlinePayment

 This is Business::OnlinePayment::OpenECHO, an Business::OnlinePayment
 backend module for ECHO. It is only useful if you have a merchant account
 with ECHO: http://www.echo-inc.com/ (also see http://www.openecho.com/)
 .
 Business::OnlinePayment is a generic interface for processing payments through
 online credit card processors, online check acceptance houses, etc. (If you
 like buzzwords, call it an "multiplatform ecommerce-enabling middleware
 solution").