`require': cannot load such file -- iconv (LoadError)

[nritholtz]

When trying to start up the testbot runner locally on my Macbook, I am getting the follow error:

nritholtz$ testbot --runner --connect localhost
/Users/nritholtz/.rvm/gems/ruby-2.1.0@automated_testing/gems/testbot-0.7.8/lib/runner/safe_result_text.rb:1:in `require': cannot load such file -- iconv (LoadError)
    from /Users/nritholtz/.rvm/gems/ruby-2.1.0@automated_testing/gems/testbot-0.7.8/lib/runner/safe_result_text.rb:1:in `<top (required)>'
    from /Users/nritholtz/.rvm/gems/ruby-2.1.0@automated_testing/gems/testbot-0.7.8/lib/runner/job.rb:2:in `require'
    from /Users/nritholtz/.rvm/gems/ruby-2.1.0@automated_testing/gems/testbot-0.7.8/lib/runner/job.rb:2:in `<top (required)>'
    from /Users/nritholtz/.rvm/gems/ruby-2.1.0@automated_testing/gems/testbot-0.7.8/lib/runner/runner.rb:6:in `require'
    from /Users/nritholtz/.rvm/gems/ruby-2.1.0@automated_testing/gems/testbot-0.7.8/lib/runner/runner.rb:6:in `<top (required)>'
    from /Users/nritholtz/.rvm/gems/ruby-2.1.0@automated_testing/gems/testbot-0.7.8/lib/shared/testbot.rb:39:in `require'
    from /Users/nritholtz/.rvm/gems/ruby-2.1.0@automated_testing/gems/testbot-0.7.8/lib/shared/testbot.rb:39:in `run'
    from /Users/nritholtz/.rvm/gems/ruby-2.1.0@automated_testing/gems/testbot-0.7.8/bin/testbot:59:in `<top (required)>'
    from /Users/nritholtz/.rvm/gems/ruby-2.1.0@automated_testing/bin/testbot:23:in `load'
    from /Users/nritholtz/.rvm/gems/ruby-2.1.0@automated_testing/bin/testbot:23:in `<main>'
    from /Users/nritholtz/.rvm/gems/ruby-2.1.0@automated_testing/bin/ruby_executable_hooks:15:in `eval'
    from /Users/nritholtz/.rvm/gems/ruby-2.1.0@automated_testing/bin/ruby_executable_hooks:15:in `<main>'