update Ruby version in README
update Ruby version in README
shonderdos/issuehub.io,despo/issuehub.io,shonderdos/issuehub.io,despo/issuehub.io,sylvesterwillis/issuehub.io,sylvesterwillis/issuehub.io,sylvesterwillis/issuehub.io,shonderdos/issuehub.io,despo/issuehub.io