Translation {Foreword} Paragraph 1

translated the first paragraph of section {foreword}.
ADD Paragraph 2 [The authors ...]

translated the second paragraph.
ADD Paragraph 3&4

this two paragraphs describe the relation between the Free Software
Community and the Intenet.
ADD Paragraph 5&6

translate paragraph 5&6, these two paragraphs describe the relation
between open software and famous corporations.
ADD Paragraph 7

这一段讲了所有公司都应该积极加入到社群当中去，这是非常重要的。
Merge pull request #6 from WPitaya/master

zh_CN-foreword