For those using RVM, it doesn’t look like RC1 is up yet, but you can download preview two by running rvm get latest and rvm install ruby-2.0.0-preview2.
rvm get latest
rvm install ruby-2.0.0-preview2
For those using RVM, it doesn’t look like RC1 is up yet, but you can download preview two by running
rvm get latestandrvm install ruby-2.0.0-preview2.