Fix #21: Accept header names of any case
Fix #10: Inspect res.redirects for redirect assertions
Merge pull request #24 from hurrymaplelad/redirects

Fix #10: Inspect res.redirects for redirect assertions
Merge pull request #22 from hurrymaplelad/case-insensitive-headers

Fix #21: Accept header names of any case
Fix #20: Test header values with regular expressions