Added start of javascript components

javascript/components/MapView.js

@@ -0,0 +1,45 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { requireNativeComponent } from 'react-native';
+
+const RCTMGLMapView = requireNativeComponent('RCTMGLMapView', MapView);
+
+const DEFAULT_CENTER_COORDINATE = {
+  type: 'Point',
+  coordinates: [-77.036086, 38.910233]
+}
+
+class MapView extends React.Component {
+  static StyleURL = {
+    Street: 'mapbox-streets',
+    Dark: 'mapbox-dark',
+    Light: 'mapbox-light',
+    Outdoors: 'mapbox-outdoors',
+    Satellite: 'mapbox-satellite'
+  }
+
+  static propTypes = {
+    animated: PropTypes.bool,
+    centerCoordinate: PropTypes.object,
+    heading: PropTypes.number,
+    ptich: PropTypes.number,
+    style: PropTypes.any,
+    styleURL: PropTypes.string,
+    zoomLevel: PropTypes.number
+  };
+
+  static defaultProps = {
+    animated: true,
+    centerCoordinate: DEFAULT_CENTER_COORDINATE,
+    heading: 0,
+    pitch: 0,
+    zoomLevel: 16,
+    styleURL: MapView.StyleURL.Street
+  };
+
+  render () {
+    return <RCTMGLMapView {...this.props} />;
+  }
+}
+
+export default MapView;