using req.params rather than req.str_params
fix for latest WebOb
Since WebOb 1.2 is not released yet (and has been in beta for who knows how long), I am going to hold off on merging this pull request until 1.2 is released.
Thought that req.params is valid for WebOb 1.1.x?
WebOb 1.2 went stable on 5/23 so I think its good to go there. I would like to +1 this patch.
Also, str_params was deprecate in 1.2 but params is valid in 1.1 and 1.2. So the patch should work regardless of the version.
This has gotten merged.