Merge pull request #3 from alibaba/master

Merge pull request
add wall.html page
Revert "add wall.html page"

This reverts commit 005f0d3aefdde85740dcbdd7d5681ee0e4488146.
add wall.html page
Merge pull request #294 from wenshao/master

improve WallFilter
Merge pull request #293 from melin/master

add wall.html page