[nl] Revised earlier Dutch translation

Modified certain sentences and wordchoises to be (hopefully) more
consistent with actual use of jargon in Dutch.
[nl] Revised earlier Dutch translation

Modified certain sentences and wordchoises to be (hopefully) more
consistent with actual use of jargon in Dutch.
Merge branch 'chapter01' of github.com:Cpt-xx/progit into chapter01
Merge pull request #638 from Cpt-xx/chapter01

Chapter01 Dutch version