Editing 01-chapter6.markdown

To update rebase message with new output
[it] Reviewed "Moving Files"
[it] Reviewed "Viewing the Commit History"
Merge pull request #729 from daftano/en

Editing 01-chapter6.markdown
Merge pull request #728 from daftano/master

[it] update chapter 2
Merge branch 'progit/master' into ja