finish function chapter section 1,2,3

Signed-off-by: xiehuc <xiehuc@gmail.com>
finish function chapter section 4

Signed-off-by: xiehuc <xiehuc@gmail.com>
Finish chap2 check. some typo checked. some order fixed (to suit Chinese Grammer).
finish function chapter section 5,6,7

Signed-off-by: xiehuc <xiehuc@gmail.com>
Merge pull request #9 from DeathKing/master

Finish chap2 check. some typo checked. some order fixed (to suit Chinese...
Merge pull request #10 from xiehuc/master

finish chapter function
some typo fixed. some order changed.
fixed till line 4045. fixed some typo. two _what_ retranslate.
Merge pull request #11 from DeathKing/master

Yet another pull request from DeathKing
begin chapter 15 objects
complete 15.1