.gitattributes 文件放在 git 项目根目录下，用来配置该项目的 git 属性。
官方资料：https://git-scm.com/docs/gitattributes 。
配置示例 1
# Set the default behavior, in case people don't have core.autocrlf set.
* text=auto
# Explicitly declare text files you want to always be normalized and converted
# to native line endings on checkout.
*.c text
*.h text
# Declare files that will always have CRLF line endings on checkout.
*.sln text eol=crlf
# Denote all files that are truly binary and should not be modified.
*.png binary
*.jpg binary
来源和解释见 Configuring Git to handle line endings。
配置示例 2
*.java text eol=lf
*.gradle text eol=lf
*.md text eol=lf