adding some .gitignore targets; updating README
bumping the development dependency versions
adding initial callback validation
adding validation call to callback_phase
adding additional XPath parsing for required validations
adding token creation/expiration timestamp and audience validation
moving token signature validation into wsfed_callback method
bumping license year; updating README to mark :issuer_name config setting as **Required**
fixing CallbackValidator issuer where configured :issuer endpoint value is used to validate request issuer_name
refactoring wsfed callback value into local variable
removing AzureACS to factor into new gem
refactoring callback_validator attribute names
refactoring AuthReponse class name to AuthCallback
refactoring auth_callback_spec variable names; removing unnecessary double quotes from string literals
cleaning up double quotes and unused constants in auth_callback
renaming CallbackValidator to AuthCallbackValidator
bumping the version number to 0.2.0
Merge branch 'release-0.2.0' into master