Fix for DeprecationWarning: crypto.pbkdf2 without specifying a digest is deprecated. Please specify a digest
Fix for DeprecationWarning: crypto.pbkdf2 without specifying a digest is deprecated. Please specify a digest

This is for future NodeJS builds v6+ where crypto now needs a digest.
For backwards compatibility we use the SHA1 digest.
heitortsergent/passport-local-mongoose-email