Started writing updated Fathead docs, copying tutorial style from
Goodies and Spice
fathead_overview: use a list to show file format
fathead_overview.md: make one list
fathead_overview.md: fix malformed list markdown
fathead_overview.md: add intro section
fathead_overview.md: use a list for dir structure
fathead_overview.md: make Perl example more realistic
fathead_overview.md: Expand intro paragraph
Rewrite Fathead tutorial based on @moollaza's start
Merge branch 'master' into update-fathead-docs2

Conflicts:
	duckduckhack/fathead/fathead_basic_tutorial.md
fathead_basic_tutorial.md: Explain directory name better.
code_styleguide: add note about vendor prefixes, minor fixes
merge
code_styleguide: fix wording on vendor prefixes
change broken last.fm example search to soundcloud search
remove unneeded keywords.txt, confirmed with @jdorweilder that its not required
remove reference to goodies page, will update later with IA Index
use smaller screensize for Tom Cruise example search, easier to read
small typo fix
first take on asking devs to notify us of incoming new IAs