Merge pull request #12 from rwifeng/doc

add doc
Update README.md
add rsf
fix
fix
fix
add batch ops
mv rsf class to func
Merge pull request #16 from rwifeng/rsf

Rsf
Merge pull request #17 from rwifeng/batch

add batch ops
rsf+batch
bugfix: rsf
Merge pull request #18 from xushiwei/feature/rsf_batch

rsf+batch
Merge pull request #15 from rwifeng/doc

fix doc
Update CHANGELOG.md
Update RsUtilsTest.php
x
x
Merge pull request #21 from xushiwei/hotfix/path

hotfix
Update CHANGELOG.md