remove all ?raw=true in img links
Update Readme.md
Merge branch 'master' of https://github.com/Boshen/The-Art-Of-Programming-by-July
Merge branch 'master' of ssh://github.com/julycoding/The-Art-Of-Programming-By-July
improve readability of chapter 16-20
链接失效

，以及IT练兵场的：[http://www.jobcoding.com/array/matrix/young-tableau-problem/](http://www.jobcoding.com/array/matrix/young-tableau-problem/)
Merge pull request #150 from zzz6519003/patch-1

链接失效
Add JavaScript implementation for chapter01
Merge pull request #151 from Frederick-S/master

Add JavaScript implementation for chapter01
Update Readme.md
Update Readme.md
Merge pull request #152 from Frederick-S/master

Update Readme.md
Add more testing code and optimize code
Update Readme.md
Update Readme.md
Update Readme.md
Merge pull request #153 from Frederick-S/master

Add more testing code and optimize code
update chapter 26
Delete php
Create chapter1.php