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
update wording after feedback
Merge pull request #124 from duckduckgo/zaahir/updates-and-fixes

Various updates and fixes to docs