gist doc
Merge remote-tracking branch 'origin/doc' into doc
merge develop
add gist tool to phpsdk
add README.gist.md
modify demo.php to achieve elegent code block in doc
all case pass
rm f22.jpeg
generate README.md by gist.py
fix iotest mimeType assert
trigger travis
Merge pull request #27 from rwifeng/doc

gist doc