$ git add --all
warning: The behavior of 'git add --all (or -A)' with no path argument from a subdirectory of the tree will change in Git 2.0 and should not be used anymore.
To add content for the whole tree, run:

  git add --all :/
  (or git add -A :/)

To restrict the command to the current directory, run:

  git add --all .
  (or git add -A .)

With the current Git version, the command is restricted to the current directory.