Reuse request method and parameters on HTTP 307 redirect.

[nightscape]

This is a minimal patch with test that fixes #119 by keeping the original request method when forwarding with a 307.

[soumyaray]

This PR really needed to respect status 307's intention. Any chance it will get merged in soon?

[perlun]

@nightscape and @soumyaray - sorry for the huge delay on this one. The project has been largely unmaintained for a long time, but things are now better.

Could you rebase this on top of current master? I think it's a good fix, we should include it in the next gem version. Ping @junaruga also so we remember to include it in the list of changes.

[nightscape]

Ok, I just rebased. Let's see what Travis says.

[nightscape]

Ok, Travis is happy with it. All good from my side!

[perlun]

Looks good, thanks! Merging. @junaruga - if you have a chance to update the history file, I'll appreciate it greatly.

[junaruga]

@perlun Yes, I will update the history file. But it's not now.
I will do it as 1 pull-request before next version release seeing past commits on master branch.
It's hard to update history file one by one.