Revert "Properly handle multiple cookies in Net:HTTP response headers"

This reverts commit 1229260682186646c2e0765ec8227f3d55fe6600.

See: #13
Fix the rack app
Fix the Gemfile
Fix the Typhoeus handler
Ignore Gemfile.lock
Reapply "Properly handle multiple cookies in response headers" #13

This reapplies commit 1229260682186646c2e0765ec8227f3d55fe6600 with
additional fixes.