add git credentials code example

Example 1: store git credentials

// local
git config credential.helper store
// global
git config --global credential.helper store

Example 2: git config credential.helper store

$ git config credential.helper store
$ git push http://example.com/repo.git
Username: <type your username>
Password: <type your password>

[several days later]
$ git push http://example.com/repo.git
[your credentials are used automatically]

Example 3: add credentials to git

git config user.name "your username"
git config user.password "your password"

Example 4: save account to git

git config --global credential.helper store

Example 5: add credentials git linux

# This cache timeout is in seconds
$ git config --global credential.helper 'cache --timeout=3600'