Explain "git add ."

git.md

@@ -34,7 +34,8 @@ Now we should be ready to create and upload the repository.
     cd public_html/
     # This will initialize public_html as a repository
     git init
-    # Adds all files to the repo. Note: you can also add files one at a time
+    # Adds all files to the repo. "." means "the current directory" (public_html, in this case)
+    # Note: you can also add files one at a time
     git add .
     # Commits files to local repo
     git commit -m "first commit of tildeweb"