v2.0: Use SHA-256 by default#686

pitbulk merged 1 commit intoSAML-Toolkits:v2.xSAML-Toolkits/ruby-saml:v2.xfrom

johnnyshields:use-sha256-by-defaultjohnnyshields/ruby-saml:use-sha256-by-defaultCopy head branch name to clipboard