增加文件注释&代码地址
Merge pull request #1 from julycoding/master

合并原作者的更新
增加1.2字符串是否包含问题 go实现
Merge branch 'master' of github.com:l2x/The-Art-Of-Programming-By-July
Merge pull request #2 from julycoding/master

合并原作者的更新
Merge pull request #245 from l2x/master

增加1.2字符串是否包含问题 go实现