I've used rvm to install rails..no problems.

Created a new app successfully

Running bundle install without issues.

Although, trying to run any command further (rails s, rails g controller.., etc)

I'm getting this error

```
    /home/USER/.rvm/gems/ruby-1.9.2-p290/gems/execjs-1.2.9/lib/execjs              /runtimes.rb:47:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)

```

I'm assuming there's an issue with a gem but I'm really clueless on what happened and can't seem to find anything that addresses this issue