shell script for translation
GETTING STARTED > Welcome 번역
GETTING STARTED > Quick-start guide 번역
GETTING STARTED > Installation 번역
GETTING STARTED > Basic Usage 번역
GETTING STARTED > Directory structure 번역
GETTING STARTED > Configuration 번역
YOUR CONTENT > Front-matter 번역
Upgrade to Liquid 2.5.2
Update history to reflect merge of #1536