Update google-cpp-styleguide/headers.rst
Update google-cpp-styleguide/scoping.rst
Merge pull request #1 from daviddengcn/patch-1

Update google-cpp-styleguide/headers.rst
Merge pull request #1 from daviddengcn/master

小修改
Merge branch 'master' of https://github.com/zh-google-styleguide/zh-google-styleguide