Fix example of filter branch

To remove temporary files recursively in the project, you have first to
find them recursively.

This fixes #538
Update 01-chapter3.markdown

It’s worth noting here that the work you did in your hotfix branch is not contained in the files in your iss53 branch. If you need to pull it in, you can merge your master branch into your iss53 branch by running git merge master, or you can wait to integrate those changes until you decide to pull the iss53 branch back into master later.
Merge pull request #540 from better0332/patch-1

Update 01-chapter3.markdown
Merge pull request #541 from progit/fix_538

Fix example of filter branch
[ja] Apply 90c92ce
Translated the "Getting Started" section

The old translation was terrible. Filled with bad language and typos. I have started from the beginning, pasting in the english version of the file.
Translated the "About Version Control" section
Merge pull request #544 from harupong/ja-chapter8

[ja] Apply 90c92ce
Merge pull request #545 from fenre/patch-1

Translated the "Getting Started" section