Fix typo
Merge pull request #50 from biow0lf/master

Fix typo
Add default_form_params to skin scope. refs #49
strip WS
Merge pull request #52 from rngtng/add-default_form_params-to-skin-cfg

Add default_form_params to skin configuration parameters
allow to configure custom payment system domain
Update .travis.yml
Add 18 and 19 mode for jruby and rbx to Travis configuration.
Merge pull request #53 from rngtng/add-custom-payflow-domain

Add option to configure custom payment domain
Fix travis.yml config
Allow build failures for rbx-19mode
Merge branch 'master' of github.com:wvanbergen/adyen
Add JRuby 1.7.pre2 to Travis test matrix.
.travis.yml fix.
Add jruby-head to Travis config; allow it to fail.
Change psp_reference field limit

So that test notifications made from the Adyen website can work.

Currently, when testing notification Adyen sents this param:

   "pspReference" => "testnotification_NOTIFICATIONTEST"

Which unfortunately does exceed the previous 30 chars limit.
Merge pull request #55 from pjg/fix_adyen_test_notifications

Make test notifications sent from Adyen website work
Add `default_api_params` requirement to docs

Closes #41
Merge pull request #56 from pjg/doc_updates

Add `default_api_params` requirement to docs
Fix API #references call with empty recurring contracts

Previously, if you had no recurring contrancts and you executed a
`references` method to list IDs of those contracts, you would get this
error:

    NoMethodError: undefined method `map' for nil:NilClass`

This fixes that, so you'll get an empty list instead.