ruby version updated
ruby version updated

the rbenv install command use version 2.3.0 but the text says 2.2.4

hackerkid/classroom,BelieveC/classroom,BelieveC/classroom,BelieveC/classroom,BelieveC/classroom,mkcode/classroom,ConnorCartwright/classroom,mkcode/classroom,ConnorCartwright/classroom,hackerkid/classroom,ConnorCartwright/classroom,hackerkid/classroom,mkcode/classroom