memo
初回
$ brew install mysql
$ mkdir -p ~/Library/LaunchAgents
$ cp /usr/local/Cellar/mysql/5.5.14/com.mysql.mysqld.plist ~/Library/LaunchAgents/
起動
$ launchctl load -w ~/Library/LaunchAgents/com.mysql.mysqld.plist
停止
$ launchctl unload -w ~/Library/LaunchAgents/com.mysql.mysqld.plist