Support HTTP redirects

[JamesMessinger]

JSON Schema $Ref Parser should automatically follow HTTP redirects. For example, the following code points to a URL that returns an HTTP 302 redirect. If the redirect were followed, then it would result in a valid JSON document. But JSON Schema $Ref Parser doesn't follow the redirect, so it throws an error because the HTTP 302 response is not a valid JSON document.

$RefParser.dereference('http://httpbin.org/redirect/5')

[JamesMessinger]

Fixed in version 2.1.0