Delete useless parameter
Colorize cli with colors instead of cli-color
https://github.com/marak/colors.js/
Apply highlight settings to code block tag
Added dependency: optimist
https://github.com/substack/node-optimist
Parse CLI with optimist
Added "version" as a console plugin
Apply optimist to console plugins
Server, Preview: Added "-p", "--port" to set port
Before rendering YAML, replaces all tabs into spaces