Installs RVM and rubies specified in the RVM_RUBY_VERSIONS variable, for example, ruby-2.4.4 and ruby-2.5.1.
Additionally configures .rvmrc and user overrides.
See the parent Makefile, makes a reference to the RVM Makefile.
mac-setup $ make rvmUsing this directly:
mac-setup/rvm $ make CURL=/path/to/curl rvm