Added GeoJSON support by default

[Peretz30]

Does any other open PR do the same thing?

No

What issue is this PR fixing?

None

How did you test this PR?

Tested on Android Real Device

I think that the less dependencies the better and GeoJSON support should be by default in this package.

import React from 'react';
import MapView, {Geojson} from 'react-native-maps';

const alcatraz = {
  type: 'FeatureCollection',
  features: [
    {
      type: 'Feature',
      properties: {},
      geometry: {
        type: 'Point',
        coordinates: [-122.42305755615234, 37.82687023785448],
      }
    }
  ]
};

const Map = props => (
  <MapView>
    <Geojson geojson={alcatraz} />
  </MapView>
);

[rborn]

@christopherdro @alvelig any thoughts on this?

[nabati]

How about GeometryCollection type?

[Peretz30]

@nabati are we really need this GeometryCollection type? There are no issues about that in https://github.com/frankrowe/react-native-geojson/issues for 2 years. So, I think wasting time to implement this feature is not worth it.

[alvelig]

Considering my notes on the uuid use case, LGTM

[Peretz30]

Deleted uuid generation, used index instead.

[Peretz30]

So, what about to merge?

[alvelig]

LGTM
@rborn @christopherdro 🐽

[christopherdro]

LGTM. Could we update the docs and add a basic version in the example app?

[Peretz30]

@christopherdro Added geojson description to docs and examples

[Peretz30]

@christopherdro @rborn @alvelig Guys, is there anything else I should do?

[christopherdro]

@Peretz30 Could you address the lint errors show in travis?

[Peretz30]

@christopherdro done

[GuillotJessica]

@Peretz30 will you add bbox feature as it is a common thing on geojson too ? but i don't think your library handles it yet

[Peretz30]

@GuillotJessica did you mean getMapBoundaries ? It's method of MapView. Geojson is a component that you should to put inside MapView as shown in example. You can use getMapBoundaries as before.

[GuillotJessica]

@Peretz30 i meant to display a map regarding the bbox received in a geojson not to get the bbox displayed

[Peretz30]

@GuillotJessica I am sorry, but I don't understand what you want to do. Can you, please, provide more details about it?

[GuillotJessica]

i mean if i provide a geojson with boundingBox, i would like the library mapBoundaries to be set accordingly

[Peretz30]

@GuillotJessica How do you want to provide geojson with boundingBox? Can you, please, post your question with some code on StackOverflow