Made response class.
First passing test.
Method for finding all digest values in the document.
Method for finding all the nodes to verify.
Response class can now verify all the hashes in the soap, but not yet in the application request.
Merge branch 'master' into tiere/sender_verification

Conflicts:
	lib/sepa.rb
Test that validates with 4 valid responses.
Test that verification fails with invalid responses.
Schema validation.
Better error messages and tests.
Method for verifying signature. Doesn't work yet though.
Signature verification now works. Problem was that I was trying to verify the base64-encoded signature...
More tests for signature verification.
Testing with nordea seems to work.
Made a verbose flag to hash verification to show corrupted hashes if needed for obvious reasons.
Error handling for corrupted certificate.
Better file names.
Test for corrupted structure.
Commenting.
Cleaner tests and less files.