add @richierocks to the list of contributors for #510
cosmetic
this is the correct way of allowing // to "comment out" code chunks

pattern$chunk.code = '^/+' will tell the parser to strip // or more slashes from the code chunk; hook.chunk() in knit_hooks is irrelevant here because it is used to render output
no, we do not need to indent asciidoc output like we do in markdown
an alternative to {n} in regexp

/ is not a meta character in regexp, so feel free to write //
currently we only need heder.begin for latex and html
cosmetic
oops, I mean //+
add documentation for render_asciidoc()
add pat_asciidoc() correspondingly
add AsciiDoc to DESCRIPTION
roxygenize
bump version