bumped version to 1.1 now that we support `exp` claim
bumped version to 1.1 now that we support `exp` claim

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