fix parser, bump version

Merge pull request #4 from node-migrator-bot/clean

[fix] path.existsSync was moved to fs.existsSync

fixed loop to prevent dropped tokens

added support for .markdown files

added ability to automatically create pages based on header depth of 1

bumped version number

implemented unsafe flag

bump version number for new release

Merge pull request #2 from poulejapon/patch-1

Adding the filename option to Jade compile method, allowing template inheritance as well as includes.

Merge pull request #1 from poulejapon/patch-1

Correcting typo in the code preventing the usage of external templates.

fixed error

added ability to pass template argument to md_to_html function