linux and git part added

app/docs/guides/training/bev.md

app/docs/guides/training/git/ scripts/elso.md

app/docs/guides/training/git/ scripts/masodik.md

app/docs/guides/training/git/01_intro.md

app/docs/guides/training/git/02_versioning.md

app/docs/guides/training/git/03_history.md

app/docs/guides/training/git/04_installation.md

app/docs/guides/training/git/05_basics.md

app/docs/guides/training/git/06_branch.md

app/docs/guides/training/git/07_basics.md

app/docs/guides/training/git/08_segedlet.md

app/docs/guides/training/git/09_hazi.md

app/docs/guides/training/git/_category_.json

app/docs/guides/training/git/img/1.png

app/docs/guides/training/git/img/basic-branching.png

app/docs/guides/training/git/img/commit-and-tree.png

app/docs/guides/training/git/img/commits-and-parents.png

app/docs/guides/training/git/img/git_lifecycle.png

app/docs/guides/training/git/img/me.jpg

app/docs/guides/training/git/img/tree_awesome.png