clarify cell data types
clarify cell data types

Esri/cordova-plugin-advanced-geolocation,geostarters/cordova-plugin-advanced-geolocation,geostarters/cordova-plugin-advanced-geolocation,geostarters/cordova-plugin-advanced-geolocation,andygup/cordova-plugin-advanced-geolocation,andygup/cordova-plugin-advanced-geolocation,Esri/cordova-plugin-advanced-geolocation,Esri/cordova-plugin-advanced-geolocation,andygup/cordova-plugin-advanced-geolocation