Added support for providing a custom params dict
This has been a long outstanding feature request for tlarsen, luckily
it turned out to be very easy to implement with the dict.merge
utility method. To have custom _rights one should instead to the
required access checks before calling the view method.
import os, sys
sys.path.insert(0, os.path.dirname(os.path.dirname(__file__)))
import pkg_resources
pkg_resources.require('WebOb')