spree_gateway does not provide any assets

Fixes #24
Use the debugger gem, not ruby-debug19
Stripe credit method should use provider.refund

provider.credit doesn't seem to be valid under active merchant 1.20.4. Simply changing the line to provider.refund seems to work.

Fixes #26
stripe supports payment_profiles_supported? so void will get 3 paramters... of which it should ignore 2
make this actually version 1.1.0 and not 1.1.3 like the current spree 1-1-stable.

Need update the minor version after changes though!

Fixes #31
Add travis.yml
New adapter for Worldpay

Uses ActiveMerchant's gateway. In addition to being an adapter for
ActiveMerchant there's also support for different logins/merchant accounts per
credit card type.

Fixes #27
update travis
rename Braintree to BraintreeGateway in order to avoid the warning: toplevel constant Braintree referenced by Spree::Gateway::Braintree

Fixes #46
Add sqlite3
Fix class references in braintree_gateway_spec
Correctly name class within braintree mgiration
update gemfile with required dependencies
Gateways must be saved in order for preferences to be correctly processed

Conflicts:

	spec/models/gateway/authorize_net_spec.rb
	spec/models/gateway/eway_spec.rb
adding support for Banwire

Fixes #50