Update 02-hadoop_basics.asciidoc

test windows
Update 02-hadoop_basics.asciidoc

wndows end
Update 02-hadoop_basics.asciidoc

Map-only Jobs: Process Records Individually翻译完成，请帮忙review ?
Update 02-hadoop_basics.asciidoc
Merge pull request #1 from jjeff-han/master

Map-only Jobs: Process Records Individually小节翻译完成，请帮忙review ?