登录功能
Merge branch 'master' of https://github.com/gaoxiang114/parkingarea.git

Conflicts:
	src/main/java/com/parkarea/common/util/Md5ConverterUtil.java
	src/main/resources/mappers/user.xml
	src/main/webapp/WEB-INF/view/login.jsp
进出车列表
进出车管理和停车位以及历史记录管理
系统初步完成
Merge branch 'master' of https://github.com/gaoxiang114/parkingarea.git

Conflicts:
	README.txt