Function Directivesの翻訳
Merge pull request #11 from hiloki/FunctionDirectives

Function Directivesの翻訳
Supervised
[監訳済み]Using SassのCachingまで
Merge pull request #12 from mazzo46/mod_ExtendingSass

【監訳済み】ExtendingSass.md
Add CONTRIBUTING.md
Merge pull request #13 from hokaccha/using_sass

[監訳済み]Using SassのCachingまで
add Introduction

Introductionの翻訳
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
監訳を反映、シンタックスハイライト適用