Basic Git commands (init, add, commit, status, log)

Also written: git init, git add, git add ., git commit, git commit -m, git status, git log, git log --oneline

`git init` turns a folder into a repository; `git add .` marks every file for the next commit; `git commit -m "message"` saves the snapshot; `git status` shows what changed or is untracked; `git log --oneline` lists commits one per line.