I've just added a '%' before "put", double quotes instead of single quote for the engine.path

你好 谢老大，我是你的新粉丝，最近因为knitr包才关注到你，让我在R studio里就可以编程写文章两不误！我同时也是SAS的使用者和高级证持有者（也没什么帮助，只是学校有免费培训和考试，就顺便考了），总之你的这个包让我受益匪浅，使我对R又充满了激情－。－

我很愿意对SAS code的运行结果的输出做出贡献，虽然改进了你的这个编码，%put是一个宏变量可以输出所打句子或字符，单纯的put 在data step里不能使用，SAS的路径最好用双引号，单引号会引起不必要的麻烦，但是SAS就是不运行，只是妖孽般的弹出然后关闭，玩起了快闪，只能输出代码而不能输出运行结果。

PS：来自比利时新鲁汶天主教大学的问候
Merge pull request #29 from lxtgogogo/patch-1

I've just added a '%' before "put", double quotes instead of single quot...
make
rename the 'format' field to 't' (yihui/knitr#697)
updated Hmisc
add the RStudio project file
hook_rgl() is smarter now: yihui/knitr#700
simplify example 033
rename format to t
an example of render_markdown(merge = TRUE)
the chunk hook is applied to the highlight engine now
the new chunk option `collapse`
update from Hmisc
new version of knitr added some chunk options, so the cache has to be rebuilt
finally hadley/ggplot2#907 has been fixed, so I can get rid of this ugly hack
blank code blocks will be removed now
update cache locally
some temp dependencies for myself
ggpcp() has gone in ggplot2, so replace this example with base graphics
update cache