Updating ruby mac
by using the auto flag RVM will know to update the user configuration files to the best known way of sourcing RVM.
In early days RVM was developed only on master branch, versions were released to RVM server and when version was bug free the latest file was updated to point to it.
This has changed, as mentioned above RVM stable is released and only bugfixes / ruby version updates are applied to it.
Rails Installer streamlines the process for Rails developers to enable them to be successful.
After installing the kit, check out the Rails Guides for information about developing Ruby on Rails applications.
Every month or two a stable release of RVM is created, it includes minor version increase.
Between releases only bugfixes and ruby version updates are added to it with teeny version update.
Normal development and major changes continue on the master branch to install it use head version.