Merge pull request #21 from Raysmond/raysmond

Raysmond
Merge pull request #22 from Raysmond/raysmond

delete useless helper
Merge branch 'raysmond'
Merge branch 'raysmond'
Merge branch 'raysmond'
Merge branch 'raysmond'
Merge branch 'raysmond'
Merge branch 'raysmond'
page not found(404) handling
Merge branch 'master' into raysmond