Fix missing verify parameter in docs
Fix missing verify parameter in docs

The docs were missing the 3rd parameter to decode which enables
verification in the first expiration example.

yahooguntu/ruby-jwt,larrylv/ruby-jwt,danoph/ruby-jwt,jwt/ruby-jwt,ab320012/ruby-jwt,excpt/ruby-jwt,iamjarvo/ruby-jwt,progrium/ruby-jwt,bkeepers/ruby-jwt,skippy/ruby-jwt