Add first file

---

• $ git add README.txt
• $ git status

Add the files to the index (or staging area, or cache).

$ git add README.txt
$ git status

examples/out/status_02.txt

# On branch master
#
# Initial commit
#
# Changes to be committed:
#   (use "git rm --cached <file>..." to unstage)
#
#       new file:   README.txt
#