Upgrade fsevent so it's not deprecated version
Resolved #95
https://github.com/hybridgroup/kidsruby/issues/95
Merge pull request #97 from hybridgroup/95-fix-background-intro

95 fix background intro
Remove paragraph that does not match tutorial code
Merge branch 'master' of github.com:hybridgroup/kidsruby
Merge branch 'master' into sphero