Added create_user_if_not_exists
Merge pull request #14 from tamlyn/patch-1

Added create_user_if_not_exists to config reference
 Metadata url content type #15
Column 'session_index' cannot be null #18
InResponseTo in response can be empty, then don't validate the request state
Merge pull request #20 from AlbertBrand/master

Don't validate the request state when InResponseTo is empty
Support KeyDescriptor without 'use' attribute #13
unit test autoloading
Support for EntitiesDescriptor element #12
Authenticate fixed only to redirect binding and config settings ignored #23
Corrected content type header
SAML protocol response cannot be sent via bindings other than HTTP POST #24
Support for EntitiesDescriptor element #12
composer.lock at latest aerialship/lightsaml
SAML protocol response cannot be sent via bindings other than HTTP POST #24
ACS SubjectConfirmationData Recipient verification #16
Assertion must be signed if HTTP POST binding is used #17
signing service not accessed correctly #22
SAML protocol response cannot be sent via bindings other than HTTP POST #24
Assertion must be signed if HTTP POST binding is used #17
Changed TwigEngine to DelegatingEngine