Git Gitignore local y remoto

<!---- git ignore local files : TL;DR;---->

echo YOURFILE_OR_DIRECTOY >> .git/info/exclude 

<!---- Description ---->

If you don't want to create a .gitignore file to share with others,
you can create rules that are not committed with the repository. 

You can use this technique for locally-generated files that you don't
expect other users to generate, such as files created by your editor.

Use your favorite text editor to open the file called 
.git/info/exclude within the root of your Git repository. 
Any rule you add here will not be checked in, and will only ignore
files for your local repository.
KostasX