Fixed tables

This commit will fix:

- Tables. This requires that you install the `pander` package.
- It also addresses the issue with unreadable code blocks in #22. For readability, especially for novices, I removed the excessive nesting and split up the code a little bit. I also added `tidy = FALSE` to that chunk to override knitr/formatR from reflowing it.
I don't think we want this in the final paper - we should instead have names added by neotoma functions and propagate those names through other neotoma utilities. OK to have this here for now but we must not forget to remove it once we fix neotoma to work this way.