Merge pull request #49 from EnviMVC/develop

v3.4のstable release
Merge pull request #51 from EnviMVC/develop

Develop
Merge pull request #52 from EnviMVC/develop

bubfix
Merge pull request #53 from EnviMVC/develop

バグフィクス
submodule update
Merge remote-tracking branch 'origin/master' into develop
comment mod ,document bug fix EnviUnitTest mod
bug fix