SourceJS CLI

Create a helper CLI tools, for managing SourceJS installation as an npm package.

Proposed commands

• sourcejs run - searches sourcejs in current projects node_modules and runs the engine. Could be used for running regular setup within configured Style Guide platform, or light setup, when SourceJS is used to describe one standalone component (or bundle)
• sourcejs install - installs sourcejs plugin
• sourcejs list - lists available sourcejs plugins
• sourcejs init - init new user folder config
• sourcejs generate - generate specs and plugins

Essential requirement for CLI is the ability to install SourceJS as npm package (dependency), which will be partly supported in 0.5.3 and will get official support in 0.6.0.