README Hotfixes

Hey guys, been working through some of your examples and noticed a few minor bugs in the README (namespace-qualifying some calls with `fact`, etc.) so I went through and updated them, fixed the .md link error, added a link to your `fetch` wiki documentation, and added line breaks to some of the map output for easier readability (i.e. no left scrolls). Figured this would be useful for others and people straight copying code from the README, we all do it :)