AtomLinter/linter-cpplint — pull request #8 by santhoshvai (2014-12-15 11:34:28+00:00)
Title: fixes #7

According to [google styleguide](http://google-styleguide.googlecode.com/svn/trunk/cpplint/cpplint.py), the option
```
extensions=extension,extension,...
The allowed file extensions that cpplint will check

Examples:
--extensions=hpp,cpp
```
restricts the file extensions that can be linted. Adding all the options fixes #7.