Merge pull request #14 from suzukima/introduction

Introductionの翻訳
Featuresの翻訳
Merge pull request #15 from suzukima/features

Featuresの翻訳を追加
Featuresの翻訳
CSSExtention,Comments,Function Directives監訳を反映、シンタックスハイライト適用
Merge pull request #16 from hiloki/supervised

【監訳済み】CSSExtention,Comments,Function Directives
監訳反映と原文削除