Command line instructions
1. Git global setup
git config --global user.name "username"
git config --global user.email "email"
2. Create a new repository
git clone git_url
cd test1
touch README.md
git add README.md
git commit -m "add README"
git push -u origin master
3. Existing folder
cd existing_folder
git init
git remote add origin git_url
git add .
git commit -m "Initial commit"
git push -u origin master
4. Existing Git repository
cd existing_repo
git remote add origin git_url
git push -u origin --all
git push -u origin --tags
