Version 0.9 (gh-pages history purged)
add build version in index.
Remove spaces around inline markup, using \+space marker.
wrap lines to 78, long lines are hard to diff.
修改语法，使语句通顺。
Add explicit hyperlink targets for each sections.
appendix for light-weight markup languages initial.
Set table style and change appendix file name.
add textile and rest markup syntax.
add advanced syntax of mkd/textile/reST.
Table refactor: move columns of markup languages before code examples.
Add org-mode syntax
@larrycai points out the table syntax for md should be for gfm.
list syntax refactor, and add asciidoc syntax.
Add table, image, url syntax for asciidoc.
Add comparation of html and markup language in the appendix.
update footnotes for appendix.
review org-mode and asciidoc syntax.
new contributer.
review part 1,2,3.