Reformat files from CLI

[fleimgruber]

Context: I am using https://github.com/dmichel35/redmine-wiki-exporter to export all wiki pages to Textile files and then converting those with pandoc to Markdown files. The conversion is really sub-par so I wanted to find alternative converters. Your project seems promising.

The actual question: Is there a way to use the conversion logic from CLI on local files, i.e. not work directly on a Redmine instance through rake?