CLI issue similar to #1057, but on OS X with rvm

[gpolyn]

Issue similar to #1057, but on OS X (10.10.5) with rvm.

/Users/me/.heroku/client/lib/heroku/auth.rb:7:in `require': cannot load such file -- netrc (LoadError)
    from /Users/me/.heroku/client/lib/heroku/auth.rb:7:in `<top (required)>'
    from /Users/me/.heroku/client/lib/heroku/client.rb:3:in `require'
    from /Users/me/.heroku/client/lib/heroku/client.rb:3:in `<top (required)>'
    from /Users/me/.rvm/gems/ruby-2.1.2@global/gems/heroku-2.11.1/lib/heroku.rb:6:in `require'
    from /Users/me/.rvm/gems/ruby-2.1.2@global/gems/heroku-2.11.1/lib/heroku.rb:6:in `<top (required)>'
    from /Users/me/.rvm/gems/ruby-2.1.2@global/gems/heroku-2.11.1/bin/heroku:6:in `require'
    from /Users/me/.rvm/gems/ruby-2.1.2@global/gems/heroku-2.11.1/bin/heroku:6:in `<top (required)>'
    from /Users/me/.rvm/rubies/ruby-2.1.2/bin/heroku:23:in `load'
    from /Users/me/.rvm/rubies/ruby-2.1.2/bin/heroku:23:in `<main>'
    from /Users/me/.rvm/gems/ruby-2.1.2/bin/ruby_executable_hooks:15:in `eval'
    from /Users/me/.rvm/gems/ruby-2.1.2/bin/ruby_executable_hooks:15:in `<main>'

Attempted remedy in ruby-2.1.2 was to add netrc to global gemset:

$ ls /Users/me/.rvm/gems/ruby-2.1.2@global/gems
bundler-1.6.2       foreman-0.25.0      launchy-0.4.0       rack-1.3.5      rdoc-4.1.0      rvm-1.11.3.9
bundler-unload-1.0.2    gem-wrappers-1.2.4  mime-types-1.16     rack-test-0.6.1     rest-client-1.6.7   term-ansicolor-1.0.7
configuration-1.2.0 gem-wrappers-1.2.7  minitest-2.7.0      rake-0.8.7      rubygems-bundler-1.4.4  test-unit-2.1.2.0
executable-hooks-1.3.2  heroku-2.11.1       netrc-0.11.0        rake-10.1.0     rubyzip-0.9.4       thor-0.14.6

I acknowledge this may be more an rvm than heroku issue.

[gpolyn]

...sorry, think this is too arcane to pursue and likely the result of the involvement of the "heroku" gem in my Gemfile.