创建ionic cordova项目(android platform)
1. 新建ionic项目(kikyou是项目名，tutorial是ionic模板名)
ionic start kikyou tutorial
Would you like to integrate your new app with Cordova to target native iOS and Android?
默认的的No,这里选Yes,如果Cordova没有安装成功会报错，没安装Cordova选No项目也能在浏览器正常运行
2. 添加android platform
cordova platform add android