[pl] Spelling/typo fixes.
Better wording

Refomulated for better understanding
Merge pull request #492 from tskrynnyk/master

[pl] Spelling/typo fixes.
[de] (08) minor spelling fix
Merge pull request #509 from weh/master

[de] (08) minor spelling fix
Revert maruku to 0.6.1

maruku 0.7.0 has a bug where code blocks starting with a star are
interpreted as lists.
[pl] next part of chapter 7
Merge branch 'master' of https://github.com/progit/progit into 07-customizing-git
Merge pull request #510 from gibas/07-customizing-git

[pl] next part of chapter 7
[th] Retranslate README file
Rename README to README.md

Fix document not render in GitHub
Merge pull request #511 from Reizinixc/th

[th] Retranslate README file
nl: Fixed some typo's in chapter 8
nl: Chapter 8: Made some sentences more fluent.
Merge pull request #512 from Jopie64/master

Some changes in the Dutch translation
Fixed a few obvious spelling, grammar, punctuation and capitalization errors in the branching
chapter of the German translation.
Merge pull request #513 from Brackmeister/master

Some fixes to the German translation
Second version of the patch (беспорядок => путаница)
Merge pull request #504 from tendium/patch-1

Better wording
Fix typo. trços -> traços.