* add second arg to hook
* fix clang-format script
* remove format script
* help
* first pass at only checking formatting for changed files
* ensure clang-format only runs against changes
* add quiet option for print output
* fix script outputs for clang-format
* wrap conditional for exit error
* remove cpplint include ordering from brightray
* fix python style errors
* add clang-format to linting
* fix var error and add mm extension
* fix diff checking for commit hook
* show incorrectly formatted lines when linting fails
* don't try to check formatting for deleted files
