Not only for Markdown

Did you thought about generalizing this library in order to not work only with markdown?

The [atom package](https://github.com/dundalek/atom-markdown-mindmap) including this library is the only mindmapping tool i found for atom and has potential. Also you splitted the functionality into modules that are allowing that easily i think?

I thought about a line based mind map description language and did not found something easy to write and well versionizable with git. So i just implemented an own parser (#8) and that worked well. I could do that for LaTeX headers (sections and so on) too but I'm not that familiar with your atom package source code in order to include that.