Add by-laws

I've made the **breaking** change to remove sub-sub sections because I want uniformity with our constitution and our constitution doesn't have sub-sub sections.

@rpolik, @clharman informs me you want to know my process. Each document is slightly different. The goal is to get the content in plain text first. So for our constitution I went from pdf->word document->plain text, whereas for the by-laws I literally copy and pasted into a text editor.

Once in plain text, the process is again different for each document. Simply find patterns in the text and convert them to markdown. Know your text editor. It can make things an order of magnitude faster.

This sounds tedious, but it took me longer to write this than to create our by-laws in markdown.

Any questions? If not, merge this pull request.