finishing registry function.
注册功能已经完成，现在可以正常使用。下面要做的就是注意SQL注入问题，还有用户名重复的问题！
Registry finished. Next we need to focus on SQL injection and judge the same username in PHP
merge registryi to dev.Registry function now is working well! But there is still some problem such as SQL injection and the same username
merge dev to master;Registry function now is working well! But there is still some problem such as SQL injection and the same username
Merge branch 'master' of https://github.com/LightIce/ULocker2