Lista de Comandos para trabajar con gemsets

    rvm use 1.8.7                          # use the ruby to manage gemsets for
    rvm gemset create project_name         # create a gemset
    rvm gemset use project_name            # use a gemset in this ruby
    rvm gemset list                        # list gemsets in this ruby
    rvm gemset delete project_name         # delete a gemset
    rvm 1.9.1@other_project_name           # use another ruby and gemset
    rvm 1.9.3@_project --create --rvmrc    # use and create gemset & .rvmrc