Revert "Delete download-git.md"

This reverts commit ad8877c48969bdbc535bd994974725e11ee59760.
Revert "Delete befehle.txt"

This reverts commit b9c3b20f725c5da9c4fdf25b586a6e69eb4d3a7b.
Revert "Delete befehle.md"

This reverts commit 90c0c4e261ac3e1f86b7998b5dae3c386d3824a5.
Revert "Delete README.md"

This reverts commit 23ffdfe854bbeb37f83dd9279661970e64d3b4d2.