Merge pull request #195 from vzever/master

create strconv/AppendBool.md
Merge pull request #196 from vzever/master

创建strconv包的部分函数翻译
Merge pull request #197 from vzever/master

创建strconv包的部分函数中文解释
Merge pull request #198 from vzever/master

finish strconv
Update Interface.md

修正错误
Merge pull request #1 from vzever/patch-2

pull patch to master