Import event model from creditcard gem
Import user and contributor models from creditcard gem
Import payment_engines to use on specs
Import fixtures from creditcard gem
Import balanced_contributors migration
Import balanced initializer from creditcard
Import customer model from creditcard gem
Fix balanced_contributor class_name
Let server come up without balanced_api_key_secret configuration

When someone is starting the app for the first time (like running
"rails console"), the server must be able to come up to let the user to
run commands without defining configuration for Balanced.
Define Configuration.[] on dummy app
Merge pull request #6 from neighborly/im-warn-blank-balanced_api_key_secret

Let server come up without balanced_api_key_secret configuration
Merge pull request #5 from neighborly/jl-import-shared-code

Import shared code from neighborly-balanced-creditcard