rename syntax-test to example-document
Update example document (slimming down)

+ Remove default custom blocks
+ Rename header sample text to more generic name
+ Clean up link order
+ Remove img and image forms for images
+ Update quotes: "|" quotes can only span 1 line
readme - clarify this repo's purpose
commiting old README
remove "easy to type" styling variants, pending decision
simplified metadata blocks
new syntax test doc
add expected html output for syntax-test
forgot what i changed
example.tup -> syntax-test.tup
move to doc repo