add documentation about handling of _method parameters

[lsmith77]

https://github.com/symfony/HttpFoundation/blob/master/Request.php#L841

[weaverryan]

Yes, totally agree. The link is a bit out of date now - so @lsmith77 is talking about the fact that if there is a _method parameter (query parameter or post parameter) in the request, then its value becomes the request method. This allows you to "fake" PUT requests in a form, simply by including a hidden input called _method with a value of PUT.

I think this would be a good, short, cookbook article - "How to use a _method parameter to fake PUT and DELETE requests".

[richardmiller-zz]

@weaverryan I think this can be closed now as per #1603

[wouterj]

@weaverryan ping. This can be closed and the Actionable label should be removed.