$ sudo npm install -g ionic

$ cd 'meedionic4' //project directory
$ npm i
$ ionic serve

$ sudo npm install -g cordova // you can skip if already installed
$ cd 'meedionic4' //project directory
$ npm i
$ ionic cordova build ios

$ sudo npm install -g cordova // you can skip if already installed
$ cd 'meedionic4' //project directory
$ npm i
$ ionic cordova build android

$ open documentation file from
$ /meedionic4/documentation/index.html