Fix #187 ability to read and append request headers
Allow JRuby to fail the CI for now

It's broken to to external issues, see bundler/bundler-api#36
Merge pull request #355 from route/187-set-headers

Fix #187 ability to read and append request headers
Fix URI::InvalidURIError raised when setting a cookie after loading a page with a space in the url (Fixes #349)
Merge pull request #353 from yaauie/fix-issue-349

Fix issue 349