←http://stackoverflow.com/questions/5189560/squash-my-last-x-commits-together-using-git
→git cheat sheet http://byte.kde.org/~zrusin/git/git-cheat-sheet-large.png
git cheat sheet 2 http://www.git-tower.com/blog/content/posts/54-git-cheat-sheet/git-cheat-sheet-large01.png
git cheat sheet 2 http://www.git-tower.com/blog/content/posts/54-git-cheat-sheet/git-cheat-sheet-large01.png