Geo location watch position not following users location accurately on real device.

[ShaunUNI]

"react-native": "0.62.0" "react-native-maps-navigation": "0.0.14"

I found the navigation worked well on simulator but was very slow and jumpy when using a real device, so much so that it completely missed turns. I found the problem stemming from the geolocation.watchPosition() was using default values for how often it should poll for users location. I increased the accuracy of this and it fixed the problem, i will put the pull request through now but it requires pull request #13.