修改备份间隔时间
修改开始时就获取Proxy
Merge branch 'master' of https://github.com/klisly/jkspider.git

Conflicts:
	src/main/cn/klisly/jkspider/Constants.java
	src/main/cn/klisly/jkspider/Monitor.java
添加配置文件、添加垃圾回收调用