The Readme workflow opens the README.md of any npm module within its associated application. This is generally a Markdown file, so you will want a Markdown viewer. I use Marked 2. Here's a list of Markdown-related applications.
This is incredibly handy if you're working with a lot of npm modules; I use it constantly--especially when fussing with a bunch of Grunt tasks.
For the curious, it works by simply asking npm for the "readme" data of a module, saves it to a temp file, then opens it.
Known Issues:
No feedback if it can't find the module you're looking for.
No autocompletion
Current Version: v1.0