{
	//css 文件中, 如果图片url是写了绝对路径, 也就是说 html 跟 css 或 图片不在一个域名下
	//就要设置下面这个属性
	"linkPrefix": "http://cdn.xxx.com/",//optional
	"manifestSuffix": "manifest", // optional
	"outputRoot": "./output/", //optional 默认在当前目录输出 "./", 建议填入
	"cache": { //required 必须
		"offline": [//offline 是 输出的manifest的名字,跟 manifestSuffix 组合成文件名
			"index.html"
		],
		"offline2": [
			"index.html",
			"main.html"
		]
	},
	"network": [  "*"  ],//optional
	"fallback": [ // optional
		"/ fallback.html"
	]
}

{
	"cache": { 
		"offline": [
			"index.html"
		],
		"offline2": [
			"index.html",
			"main.html"
		]
	}
}