complete test_multi_actions.rb
add UnescapePath
revise CHANGES.md and README.md. TODO: tests for each extension
README.md: extension tests added
use env directly
README.md: Modify response as a middleware
Default headers as a middleware
this is much more extensible
rename UnescapePath to NormalizedPath
rename IndifferentParams to NormalizedParams
normalized_path would now make sure PATH_INFO begins with /
not yet complete translation for test_routing.rb